Begin refactor of cities

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

@@ -794,9 +794,6 @@ public class PlaceAssetMsgHandler extends AbstractClientMsgHandler {
 
         zoneObject.global_height = ZoneManager.calculateGlobalZoneHeight(zoneObject);
 
-        cityObject.setParent(zoneObject);
-        cityObject.setObjectTypeMask(MBServerStatics.MASK_CITY); // *** Refactor : should have it already
-
         //Link the tree of life with the new zone
 
         treeObject.setObjectTypeMask(MBServerStatics.MASK_BUILDING);