Refactored Zone to new system

src/engine/net/client/handlers/PlaceAssetMsgHandler.java

@@ -788,7 +788,6 @@ public class PlaceAssetMsgHandler extends AbstractClientMsgHandler {
         if (zoneObject.parent != null)
             zoneObject.parent.addNode(zoneObject); //add as child to parent
 
-        ZoneManager.addZone(zoneObject.getObjectUUID(), zoneObject);
         ZoneManager.addPlayerCityZone(zoneObject);
         serverZone.addNode(zoneObject);