More itembase refactor work

src/engine/objects/City.java

@@ -1363,8 +1363,6 @@ public class City extends AbstractWorldObject {
         if (ruledWarehouse == null)
             return true;
 
-        ItemBase.getItemHashIDMap();
-
         ArrayList<ResourceType> resources = new ArrayList<>();
 
         float taxPercent = msg.getTaxPercent();