[ISSUE #2642] Remove unused imports

remoting/src/test/java/org/apache/rocketmq/remoting/netty/NettyRemotingAbstractTest.java

@@ -27,8 +27,6 @@ import org.mockito.junit.MockitoJUnitRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.mockito.ArgumentMatchers.notNull;
 import static org.mockito.Mockito.when;
 
 @RunWith(MockitoJUnitRunner.class)
@@ -98,7 +96,7 @@ public class NettyRemotingAbstractTest {
     public void testScanResponseTable() {
         int dummyId = 1;
         // mock timeout
-        ResponseFuture responseFuture = new ResponseFuture(null,dummyId, -1000, new InvokeCallback() {
+        ResponseFuture responseFuture = new ResponseFuture(null, dummyId, -1000, new InvokeCallback() {
             @Override
             public void operationComplete(final ResponseFuture responseFuture) {
             }

remoting/src/test/java/org/apache/rocketmq/remoting/netty/NettyRemotingClientTest.java

@@ -16,7 +16,6 @@
  */
 package org.apache.rocketmq.remoting.netty;
 
-import java.lang.reflect.Field;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import org.junit.Test;