Wdt duplicate overrides (#1214)

* Fix for flattened folders without tokens in location

* change code to not generate duplicate zip file entries for overrides

* push out of wrong branch

Author: CarolynRountree

core/src/main/java/oracle/weblogic/deploy/util/WLSDeployArchive.java

@@ -1883,9 +1883,6 @@ private String walkDownFolders(String zipPrefix, File zipPath) throws WLSDeployA
             if (fileList != null) {
                 for (File item : fileList) {
                     newSourceName = addItemToZip(zipPrefix, item);
-                    if (item.isDirectory()) {
-                        walkDownFolders(zipPrefix + "/" + item.getName(), item);
-                    }
                 }
             }
         }