Unbundle Maven Plugin

pom.xml

@@ -91,7 +91,6 @@ THE SOFTWARE.
     <project.patchManagement.url>https://api.github.com</project.patchManagement.url>
     <patch.tracker.serverId>jenkins-jira</patch.tracker.serverId>
 
-    <maven-plugin.version>2.14</maven-plugin.version>
     <matrix-auth.version>2.3</matrix-auth.version>
     <matrix-project.version>1.14</matrix-project.version>
     <sorcerer.version>0.11</sorcerer.version>

test-pom/pom.xml

@@ -95,7 +95,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>${project.groupId}</groupId>
       <artifactId>maven-plugin</artifactId>
-      <version>${maven-plugin.version}</version>
+      <version>2.14</version>
       <exclusions>
         <exclusion> <!-- perhaps unnecessary as of JENKINS-35445? -->
           <groupId>org.apache.httpcomponents</groupId>

war/pom.xml

@@ -294,12 +294,6 @@ THE SOFTWARE.
                 <!--
                     Detached plugins and their dependencies - detached plugins that used to be bundled plugins
                 -->
-                <artifactItem>
-                  <groupId>${project.groupId}</groupId>
-                  <artifactId>maven-plugin</artifactId>
-                  <version>${maven-plugin.version}</version>
-                  <type>hpi</type>
-                </artifactItem>
                 <artifactItem>
                   <groupId>org.jenkins-ci.plugins</groupId>
                   <artifactId>ssh-slaves</artifactId>