Remove from dbManager cache

src/engine/gameManager/BuildingManager.java

@@ -342,8 +342,10 @@ public enum BuildingManager {
                     // Remove any cooking items from collections
                     // to ensure we don't leak memory.
 
-                    for (Item item : workOrder.cooking)
+                    for (Item item : workOrder.cooking) {
+                        DbManager.removeFromCache(item);
                         ForgeManager.itemWorkOrderLookup.remove(item);
+                    }
 
                     DbManager.WarehouseQueries.DELETE_WORKORDER(workOrder);
                 }