Rolling back last workaround, files must not be locked, test is right and code needs to be fixed

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@586566 13f79535-47bb-0310-9956-ffa450edef68

maven-core/src/test/java/org/apache/maven/extension/DefaultExtensionManagerTest.java

@@ -82,19 +82,9 @@ public class DefaultExtensionManagerTest
             File f = (File) it.next();
 
             if ( f.exists() )
-            {
-                try
             {
                 FileUtils.forceDelete( f );
             }
-                catch ( IOException e )
-                {
-                    // TODO carlos: delete fails on windows, needs investigation
-                    // the test-extension-1.jar is locked for deletion
-                    // I traced it and seems to get locked at getRealm().findRealmResources(
-                    // name ) in org.codehaus.plexus.classworlds.strategy.DefaultStrategy:146
-                }
-            }
         }
     }