Remove unnecessary javadocs

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

@@ -83,9 +83,6 @@ public abstract class ACL {
     /**
      * Checks if the current security principal has the permission to create top level items within the specified item group.
      * <p>
-     * Note that {@link #SYSTEM} can be passed in as the authentication parameter,
-     * in which case you should probably just assume it has can create anything.
-     * <p>
      * This is just a convenience function.
      * @param c the container of the item.
      * @param d the descriptor of the item to be created.