Remove unnecessary version declaration and insertion of groupId

integration/as7-eap-subsystem/pom.xml

@@ -31,8 +31,8 @@
     <build>
         <plugins>
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>2.3.1</version>
                 <configuration>
                     <source>1.6</source>
                     <target>1.6</target>