Remove unused imports

core/src/main/java/hudson/ExtensionFinder.java

@@ -42,7 +42,6 @@ import com.google.inject.spi.ProvisionListener;
 import hudson.init.InitMilestone;
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
-import hudson.util.ReflectionUtils;
 import jenkins.ExtensionComponentSet;
 import jenkins.ExtensionFilter;
 import jenkins.ExtensionRefreshException;

core/src/main/java/hudson/ExtensionPoint.java

@@ -29,7 +29,6 @@ import static java.lang.annotation.ElementType.TYPE;
 import java.lang.annotation.Retention;
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
 import java.lang.annotation.Target;
-import jenkins.util.io.OnMaster;
 
 /**
  * Marker interface that designates extensible components

core/src/main/java/hudson/FileSystemProvisioner.java

@@ -40,7 +40,6 @@ import org.jenkinsci.Symbol;
 
 import java.io.BufferedOutputStream;
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 

core/src/main/java/hudson/Util.java

@@ -91,7 +91,6 @@ import javax.crypto.SecretKey;
 import javax.crypto.spec.SecretKeySpec;
 
 import org.apache.commons.io.FileUtils;
-import org.kohsuke.stapler.Ancestor;
 import org.kohsuke.stapler.StaplerRequest;
 
 /**

core/src/main/java/hudson/cli/handlers/package-info.java

@@ -3,4 +3,3 @@
  */
 package hudson.cli.handlers;
 
-import org.kohsuke.args4j.spi.OptionHandler;
\ No newline at end of file

core/src/main/java/hudson/init/impl/InstallUncaughtExceptionHandler.java

@@ -5,12 +5,8 @@ import java.io.EOFException;
 import jenkins.model.Jenkins;
 import org.kohsuke.stapler.WebApp;
 import org.kohsuke.stapler.compression.CompressionFilter;
-import org.kohsuke.stapler.compression.UncaughtExceptionHandler;
 
-import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 import java.util.logging.Level;
 import java.util.logging.Logger;

core/src/main/java/hudson/init/package-info.java

@@ -44,4 +44,3 @@
  */
 package hudson.init;
 
-import org.jvnet.hudson.reactor.Task;
\ No newline at end of file

core/src/main/java/hudson/lifecycle/WindowsInstallerLink.java

@@ -54,7 +54,6 @@ import org.kohsuke.stapler.interceptor.RequirePOST;
 
 import javax.servlet.ServletException;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.util.logging.Logger;
 import java.util.logging.Level;

core/src/main/java/hudson/logging/LogRecorderManager.java

@@ -25,7 +25,6 @@ package hudson.logging;
 
 import hudson.FeedAdapter;
 import hudson.Functions;
-import hudson.PluginManager;
 import hudson.init.Initializer;
 import static hudson.init.InitMilestone.PLUGINS_PREPARED;
 import hudson.model.AbstractModelObject;

core/src/main/java/hudson/model/AbstractCIBase.java

@@ -39,7 +39,6 @@ import java.util.concurrent.CopyOnWriteArraySet;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import javax.annotation.CheckForNull;
-import javax.annotation.Nonnull;
 
 import jenkins.model.Configuration;
 

core/src/main/java/hudson/model/AbstractItem.java

@@ -38,7 +38,6 @@ import hudson.model.queue.Tasks;
 import hudson.model.queue.WorkUnit;
 import hudson.security.ACLContext;
 import hudson.security.AccessControlled;
-import hudson.security.Permission;
 import hudson.security.ACL;
 import hudson.util.AlternativeUiTextProvider;
 import hudson.util.AlternativeUiTextProvider.Message;

core/src/main/java/hudson/model/Cause.java

@@ -25,7 +25,6 @@ package hudson.model;
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 
 import hudson.console.ModelHyperlinkNote;

core/src/main/java/hudson/model/Computer.java

@@ -31,7 +31,6 @@ import hudson.Extension;
 import hudson.Launcher.ProcStarter;
 import hudson.slaves.Cloud;
 import jenkins.security.stapler.StaplerDispatchable;
-import jenkins.util.SystemProperties;
 import hudson.Util;
 import hudson.cli.declarative.CLIResolver;
 import hudson.console.AnnotatedLargeText;

core/src/main/java/hudson/model/Descriptor.java

@@ -53,7 +53,6 @@ import org.apache.commons.io.IOUtils;
 import static hudson.util.QuotedStringTokenizer.*;
 import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
 
-import javax.annotation.PostConstruct;
 import javax.servlet.ServletException;
 import javax.servlet.RequestDispatcher;
 import java.io.File;

core/src/main/java/hudson/model/DownloadService.java

@@ -50,7 +50,6 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 import jenkins.model.DownloadSettings;
 import jenkins.model.Jenkins;
-import jenkins.util.JSONSignatureValidator;
 import net.sf.json.JSONException;
 import net.sf.json.JSONObject;
 import org.apache.commons.io.IOUtils;

core/src/main/java/hudson/model/JDK.java

@@ -39,7 +39,6 @@ import hudson.util.XStream2;
 import java.io.File;
 import java.io.IOException;
 import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
 import java.util.Map;
 import java.util.List;
 import java.util.Arrays;

core/src/main/java/hudson/model/Job.java

@@ -29,7 +29,6 @@ import hudson.EnvVars;
 import hudson.Extension;
 import hudson.ExtensionPoint;
 import hudson.FeedAdapter;
-import hudson.FilePath;
 import hudson.PermalinkList;
 import hudson.Util;
 import hudson.cli.declarative.CLIResolver;
@@ -67,7 +66,6 @@ import java.awt.Color;
 import java.awt.Paint;
 import java.io.File;
 import java.io.IOException;
-import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Collection;

core/src/main/java/hudson/model/LargeText.java

@@ -26,7 +26,6 @@ package hudson.model;
 import hudson.util.ByteBuffer;
 import hudson.util.CharSpool;
 import hudson.util.LineEndNormalizingWriter;
-import org.apache.commons.fileupload.util.Closeable;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;
 import org.kohsuke.stapler.framework.io.WriterOutputStream;

core/src/main/java/hudson/model/MyViewsProperty.java

@@ -27,7 +27,6 @@ import hudson.Extension;
 import hudson.Util;
 import hudson.model.Descriptor.FormException;
 import hudson.security.ACL;
-import hudson.security.Permission;
 import hudson.util.FormValidation;
 import hudson.views.MyViewsTabBar;
 import hudson.views.ViewsTabBar;
@@ -45,7 +44,6 @@ import javax.servlet.ServletException;
 import jenkins.model.Jenkins;
 import net.sf.json.JSONObject;
 
-import org.acegisecurity.AccessDeniedException;
 import org.jenkinsci.Symbol;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;

core/src/main/java/hudson/model/Node.java

@@ -39,7 +39,6 @@ import hudson.remoting.Callable;
 import hudson.remoting.VirtualChannel;
 import hudson.security.ACL;
 import hudson.security.AccessControlled;
-import hudson.security.Permission;
 import hudson.slaves.Cloud;
 import hudson.slaves.ComputerListener;
 import hudson.slaves.NodeDescriptor;

core/src/main/java/hudson/model/Run.java

@@ -95,7 +95,6 @@ import java.util.Map;
 import java.util.Set;
 import java.util.logging.Level;
 import static java.util.logging.Level.*;
-import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
 
 import java.util.logging.Logger;
 import javax.annotation.CheckForNull;
@@ -125,7 +124,6 @@ import org.apache.commons.lang.ArrayUtils;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.HttpResponse;
-import org.kohsuke.stapler.HttpResponses;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerProxy;

core/src/main/java/hudson/model/RunParameterDefinition.java

@@ -23,9 +23,6 @@
  */
 package hudson.model;
 
-import static java.util.logging.Level.WARNING;
-
-import java.util.logging.Level;
 import java.util.logging.Logger;
 import jenkins.model.Jenkins;
 import net.sf.json.JSONObject;

core/src/main/java/hudson/model/TransientUserActionFactory.java

@@ -26,7 +26,7 @@ package hudson.model;
 import hudson.Extension;
 import hudson.ExtensionList;
 import hudson.ExtensionPoint;
-import jenkins.model.Jenkins;
+
 import java.util.Collection;
 import java.util.Collections;
 

core/src/main/java/hudson/model/UpdateCenter.java

@@ -63,7 +63,6 @@ import jenkins.RestartRequiredException;
 import jenkins.install.InstallUtil;
 import jenkins.model.Jenkins;
 import jenkins.util.io.OnMaster;
-import jenkins.util.java.JavaUtils;
 import net.sf.json.JSONObject;
 
 import org.acegisecurity.Authentication;

core/src/main/java/hudson/model/User.java

@@ -87,8 +87,6 @@ import org.apache.commons.lang.StringUtils;
 import org.jenkinsci.Symbol;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
-import org.kohsuke.stapler.HttpResponses;
-import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerProxy;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;
@@ -97,8 +95,6 @@ import org.kohsuke.stapler.export.ExportedBean;
 import org.kohsuke.stapler.interceptor.RequirePOST;
 import org.springframework.dao.DataAccessException;
 
-import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
-
 /**
  * Represents a user.
  *

core/src/main/java/hudson/model/UserIdMigrator.java

@@ -29,7 +29,6 @@ import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 import java.io.File;
 import java.io.IOException;
-import java.nio.file.CopyOption;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
 import java.util.HashMap;

core/src/main/java/hudson/model/ViewDescriptor.java

@@ -27,8 +27,7 @@ import hudson.util.FormValidation;
 import hudson.views.ListViewColumn;
 import hudson.views.ListViewColumnDescriptor;
 import hudson.views.ViewJobFilter;
-import java.lang.reflect.ParameterizedType;
-import java.lang.reflect.Type;
+
 import java.util.Iterator;
 import java.util.List;
 import javax.annotation.CheckForNull;
@@ -36,7 +35,6 @@ import javax.annotation.Nonnull;
 import jenkins.model.DirectlyModifiableTopLevelItemGroup;
 import jenkins.model.Jenkins;
 import org.apache.commons.lang.StringUtils;
-import org.jvnet.tiger_types.Types;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.DoNotUse;
 import org.kohsuke.stapler.AncestorInPath;

core/src/main/java/hudson/model/ViewGroupMixIn.java

@@ -27,7 +27,7 @@ import hudson.model.ItemGroupMixIn;
 import hudson.model.View;
 import hudson.model.ViewGroup;
 import java.util.Locale;
-import java.util.logging.Level;
+
 import org.kohsuke.stapler.export.Exported;
 
 import java.io.IOException;

core/src/main/java/hudson/model/listeners/ItemListener.java

@@ -24,7 +24,6 @@
 package hudson.model.listeners;
 
 import com.google.common.base.Function;
-import hudson.AbortException;
 import hudson.ExtensionPoint;
 import hudson.ExtensionList;
 import hudson.Extension;
@@ -35,7 +34,6 @@ import hudson.model.Items;
 import hudson.security.ACL;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import org.acegisecurity.AccessDeniedException;
 
 /**
  * Receives notifications about CRUD operations of {@link Item}.

core/src/main/java/hudson/model/listeners/RunListener.java

@@ -28,12 +28,10 @@ import hudson.ExtensionListView;
 import hudson.Extension;
 import hudson.ExtensionList;
 import hudson.FilePath;
-import hudson.Functions;
 import hudson.Launcher;
 import hudson.model.AbstractBuild;
 import hudson.model.BuildListener;
 import hudson.model.Environment;
-import hudson.model.Job;
 import hudson.model.JobProperty;
 import hudson.model.Run;
 import hudson.model.Run.RunnerAbortedException;

core/src/main/java/hudson/security/ACLContext.java

@@ -23,7 +23,6 @@
  */
 package hudson.security;
 
-import javax.annotation.CheckForNull;
 import javax.annotation.Nonnull;
 import org.acegisecurity.Authentication;
 import org.acegisecurity.context.SecurityContext;

core/src/main/java/hudson/security/AuthorizationStrategy.java

@@ -39,7 +39,6 @@ import jenkins.model.Jenkins;
 import jenkins.security.stapler.StaplerAccessibleType;
 import net.sf.json.JSONObject;
 
-import org.acegisecurity.Authentication;
 import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.StaplerRequest;
 

core/src/main/java/hudson/security/BasicAuthenticationFilter.java

@@ -26,7 +26,6 @@ package hudson.security;
 import hudson.model.User;
 import jenkins.model.Jenkins;
 import hudson.util.Scrambler;
-import jenkins.security.ApiTokenProperty;
 import jenkins.security.SecurityListener;
 import org.acegisecurity.Authentication;
 import jenkins.security.BasicApiTokenHelper;

core/src/main/java/hudson/security/GlobalSecurityConfiguration.java

@@ -50,7 +50,6 @@ import net.sf.json.JSONObject;
 
 import org.jenkinsci.Symbol;
 import org.kohsuke.accmod.Restricted;
-import org.kohsuke.accmod.restrictions.DoNotUse;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;

core/src/main/java/hudson/slaves/EnvironmentVariablesNodeProperty.java

@@ -40,7 +40,6 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
-import java.util.Set;
 import java.util.stream.Collectors;
 
 /**

core/src/main/java/hudson/tasks/BuildStepCompatibilityLayer.java

@@ -31,12 +31,10 @@ import hudson.model.Action;
 import hudson.model.Project;
 import hudson.model.AbstractBuild;
 import hudson.model.AbstractProject;
-import hudson.util.ReflectionUtils;
 import hudson.Launcher;
 import hudson.Util;
 
 import java.io.IOException;
-import java.lang.reflect.Method;
 import java.util.Collection;
 import java.util.Collections;
 

core/src/main/java/hudson/triggers/Trigger.java

@@ -60,7 +60,6 @@ import antlr.ANTLRException;
 import javax.annotation.CheckForNull;
 import javax.annotation.Nonnull;
 
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.model.Items;
 import jenkins.model.ParameterizedJobMixIn;
 import org.jenkinsci.Symbol;

core/src/main/java/hudson/util/HttpResponses.java

@@ -29,7 +29,6 @@ import org.kohsuke.stapler.HttpResponse;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;
 
-import javax.annotation.CheckForNull;
 import javax.annotation.Nonnull;
 import javax.servlet.ServletException;
 import java.io.File;

core/src/main/java/hudson/util/Iterators.java

@@ -33,7 +33,6 @@ import java.util.List;
 import java.util.NoSuchElementException;
 import java.util.ListIterator;
 import java.util.AbstractList;
-import java.util.Arrays;
 import java.util.Set;
 import java.util.HashSet;
 import javax.annotation.Nonnull;

core/src/main/java/hudson/util/LRUStringConverter.java

 package hudson.util;
 
 import com.thoughtworks.xstream.converters.basic.AbstractSingleValueConverter;
-import com.thoughtworks.xstream.converters.basic.StringConverter;
 import org.apache.commons.collections.map.LRUMap;
 
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.Map;
 
 public class LRUStringConverter extends AbstractSingleValueConverter {

core/src/main/java/hudson/util/RobustReflectionConverter.java

@@ -44,7 +44,6 @@ import hudson.model.Saveable;
 import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;

core/src/main/java/hudson/util/io/RewindableFileOutputStream.java

@@ -25,7 +25,6 @@ package hudson.util.io;
 
 import java.io.File;
 import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.nio.file.Files;

core/src/main/java/hudson/util/io/TarArchiver.java

@@ -30,7 +30,6 @@ import hudson.util.FileVisitor;
 import hudson.util.IOUtils;
 
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;

core/src/main/java/hudson/util/io/ZipArchiver.java

@@ -34,7 +34,6 @@ import org.apache.tools.zip.Zip64Mode;
 import org.apache.tools.zip.ZipOutputStream;
 
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 

core/src/main/java/hudson/widgets/BuildHistoryWidget.java

@@ -28,7 +28,6 @@ import hudson.model.Queue.Item;
 import hudson.model.Queue.Task;
 import jenkins.widgets.HistoryPageFilter;
 
-import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
 

core/src/main/java/jenkins/AgentProtocol.java

@@ -9,7 +9,7 @@ import java.io.IOException;
 import java.net.Socket;
 import java.util.Set;
 import javax.annotation.CheckForNull;
-import javax.annotation.Nonnull;
+
 import jenkins.model.Jenkins;
 
 /**

core/src/main/java/jenkins/PluginSubtypeMarker.java

@@ -43,8 +43,6 @@ import javax.tools.FileObject;
 import javax.tools.StandardLocation;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
-import java.io.PrintWriter;
-import java.io.StringWriter;
 import java.io.Writer;
 import java.nio.charset.StandardCharsets;
 import java.util.Set;

core/src/main/java/jenkins/diagnosis/HsErrPidList.java

@@ -6,9 +6,8 @@ import hudson.Functions;
 import hudson.Util;
 import hudson.model.AdministrativeMonitor;
 import hudson.util.jna.Kernel32Utils;
-import java.nio.file.Files;
+
 import java.nio.file.InvalidPathException;
-import java.nio.file.OpenOption;
 import java.nio.file.StandardOpenOption;
 import jenkins.model.Jenkins;
 import jenkins.security.stapler.StaplerDispatchable;
@@ -18,7 +17,6 @@ import org.apache.tools.ant.types.FileSet;
 
 import java.io.BufferedReader;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.Reader;
@@ -29,7 +27,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import org.apache.commons.io.IOUtils;
+
 import org.jenkinsci.Symbol;
 
 /**

core/src/main/java/jenkins/install/InstallUtil.java

@@ -48,7 +48,6 @@ import com.google.common.base.Function;
 import com.thoughtworks.xstream.XStream;
 
 import hudson.Functions;
-import hudson.Main;
 import hudson.model.UpdateCenter.DownloadJob.InstallationStatus;
 import hudson.model.UpdateCenter.DownloadJob.Installing;
 import hudson.model.UpdateCenter.InstallationJob;

core/src/main/java/jenkins/management/AdministrativeMonitorsDecorator.java

@@ -28,17 +28,13 @@ import hudson.Functions;
 import hudson.diagnosis.ReverseProxySetupMonitor;
 import hudson.model.AdministrativeMonitor;
 import hudson.model.PageDecorator;
-import hudson.util.HttpResponses;
 import hudson.util.HudsonIsLoading;
 import hudson.util.HudsonIsRestarting;
 import jenkins.diagnostics.URICheckEncodingMonitor;
 import jenkins.model.Jenkins;
-import net.sf.json.JSON;
-import net.sf.json.JSONObject;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.Ancestor;
-import org.kohsuke.stapler.HttpResponse;
 import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerRequest;
 

core/src/main/java/jenkins/model/Uptime.java

 package jenkins.model;
 
 import hudson.Extension;
-import hudson.ExtensionList;
 import hudson.init.InitMilestone;
 import hudson.init.Initializer;
 

core/src/main/java/jenkins/model/identity/IdentityRootAction.java

@@ -4,7 +4,6 @@ import hudson.Extension;
 import hudson.model.UnprotectedRootAction;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
-import java.security.interfaces.RSAPrivateKey;
 import java.security.interfaces.RSAPublicKey;
 import org.apache.commons.codec.Charsets;
 import org.apache.commons.codec.binary.Base64;

core/src/main/java/jenkins/model/queue/AsynchronousExecution.java

@@ -39,7 +39,6 @@ import javax.annotation.Nonnull;
 import javax.annotation.concurrent.GuardedBy;
 import jenkins.model.Jenkins;
 import org.kohsuke.accmod.Restricted;
-import org.kohsuke.accmod.restrictions.DoNotUse;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 /**

core/src/main/java/jenkins/scm/RunWithSCM.java

@@ -26,7 +26,6 @@ package jenkins.scm;
 
 import com.google.common.collect.ImmutableSet;
 import hudson.model.Job;
-import hudson.model.Queue;
 import hudson.model.Result;
 import hudson.model.Run;
 import hudson.model.User;

core/src/main/java/jenkins/security/ApiTokenProperty.java

@@ -50,7 +50,6 @@ import org.kohsuke.stapler.StaplerResponse;
 
 import java.io.IOException;
 import java.security.SecureRandom;
-import java.text.SimpleDateFormat;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Collection;

core/src/main/java/jenkins/security/BasicApiTokenHelper.java

@@ -31,8 +31,6 @@ import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 import javax.annotation.CheckForNull;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 

core/src/main/java/jenkins/security/CryptoConfidentialKey.java

@@ -2,9 +2,7 @@ package jenkins.security;
 
 import hudson.Main;
 import hudson.util.Secret;
-import jenkins.model.Jenkins;
 import org.kohsuke.accmod.Restricted;
-import org.kohsuke.accmod.restrictions.DoNotUse;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 import javax.crypto.Cipher;

core/src/main/java/jenkins/security/ImpersonatingUserDetailsService.java

@@ -8,8 +8,6 @@ import org.acegisecurity.userdetails.UserDetailsService;
 import org.acegisecurity.userdetails.UsernameNotFoundException;
 import org.springframework.dao.DataAccessException;
 
-import static java.util.Collections.*;
-
 /**
  * {@link UserDetailsService} for those {@link SecurityRealm}
  * that doesn't allow query of other users.

core/src/main/java/jenkins/security/MasterToSlaveCallable.java

@@ -5,8 +5,6 @@ import hudson.remoting.Channel;
 import hudson.remoting.ChannelClosedException;
 import jenkins.slaves.RemotingVersionInfo;
 import org.jenkinsci.remoting.RoleChecker;
-import org.kohsuke.accmod.Restricted;
-import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 
 /**

core/src/main/java/jenkins/security/QueueItemAuthenticatorConfiguration.java

@@ -6,7 +6,6 @@ import hudson.model.queue.Tasks;
 import hudson.util.DescribableList;
 import jenkins.model.GlobalConfiguration;
 import jenkins.model.GlobalConfigurationCategory;
-import jenkins.model.Jenkins;
 import net.sf.json.JSONObject;
 import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.StaplerRequest;

core/src/main/java/jenkins/security/SecurityListener.java

@@ -26,7 +26,6 @@ package jenkins.security;
 
 import hudson.ExtensionList;
 import hudson.ExtensionPoint;
-import hudson.security.AbstractPasswordBasedSecurityRealm;
 import hudson.security.SecurityRealm;
 import java.util.ArrayList;
 import java.util.List;

core/src/main/java/jenkins/slaves/JnlpSlaveAgentProtocol.java

@@ -2,7 +2,6 @@ package jenkins.slaves;
 
 import hudson.Extension;
 import hudson.ExtensionList;
-import hudson.Util;
 import hudson.model.Computer;
 import java.io.IOException;
 import java.net.Socket;
@@ -10,7 +9,6 @@ import java.util.Collections;
 import java.util.logging.Logger;
 import javax.inject.Inject;
 import jenkins.AgentProtocol;
-import jenkins.model.Jenkins;
 import jenkins.security.HMACConfidentialKey;
 import org.jenkinsci.Symbol;
 import org.jenkinsci.remoting.engine.JnlpConnectionState;

core/src/main/java/jenkins/slaves/JnlpSlaveAgentProtocol3.java

 package jenkins.slaves;
 
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.Extension;
 import hudson.ExtensionList;
-import hudson.Util;
 import hudson.model.Computer;
 import java.io.IOException;
 import java.net.Socket;
 import java.util.Collections;
 import javax.inject.Inject;
 import jenkins.AgentProtocol;
-import jenkins.model.Jenkins;
-import jenkins.util.SystemProperties;
 import org.jenkinsci.Symbol;
 import org.jenkinsci.remoting.engine.JnlpConnectionState;
 import org.jenkinsci.remoting.engine.JnlpProtocol3Handler;
-import org.kohsuke.accmod.Restricted;
-import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 /**
  * Master-side implementation for JNLP3-connect protocol.

core/src/main/java/jenkins/telemetry/impl/StaplerDispatches.java

@@ -25,7 +25,6 @@ package jenkins.telemetry.impl;
 
 import hudson.Extension;
 import hudson.PluginWrapper;
-import hudson.model.UsageStatistics;
 import hudson.util.VersionNumber;
 import jenkins.model.Jenkins;
 import jenkins.telemetry.Telemetry;

core/src/main/java/jenkins/util/AntClassLoader.java

@@ -35,7 +35,6 @@ import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.lang.reflect.Constructor;

core/src/main/java/jenkins/util/JSONSignatureValidator.java

@@ -17,7 +17,6 @@ import org.jvnet.hudson.crypto.SignatureOutputStream;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStreamWriter;

core/src/main/java/jenkins/util/ProgressiveRendering.java

@@ -24,7 +24,6 @@
 
 package jenkins.util;
 
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.Method;

core/src/main/java/jenkins/util/VirtualFile.java

@@ -44,7 +44,6 @@ import java.net.URI;
 import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.InvalidPathException;
-import java.nio.file.LinkOption;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;

core/src/main/java/jenkins/util/io/FileBoolean.java

@@ -5,7 +5,6 @@ import java.nio.file.InvalidPathException;
 import jenkins.model.Jenkins;
 
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.logging.Level;
 import java.util.logging.Logger;

core/src/main/java/jenkins/util/xml/XMLUtils.java

@@ -4,7 +4,6 @@ import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.InvalidPathException;
 import jenkins.util.SystemProperties;
-import org.apache.commons.io.IOUtils;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.w3c.dom.Document;
@@ -14,7 +13,6 @@ import org.xml.sax.XMLReader;
 import org.xml.sax.helpers.XMLReaderFactory;
 
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;