Made windowspawner keep track of spawned window count

Assets/Scripts/Windows/BasicWindow.cs

@@ -12,10 +12,5 @@ namespace InterfaceOff
             Components.InfoText.text = advert.Name;
             Components.WindowImage.color = new Color(1, 1, 1, 1);
         }
-
-        public override void OnWindowCloseButtonClicked()
-        {
-            Destroy(gameObject);
-        }
     }
 }