Made windowspawner keep track of spawned window count

Assets/Scripts/Windows/MovingWindow.cs

@@ -16,10 +16,5 @@ namespace InterfaceOff
             float angle = Random.Range(0, Mathf.PI * 2);
             Velocity = new Vector2(Mathf.Cos(angle), Mathf.Sin(angle)) * 100;
         }
-
-        public override void OnWindowCloseButtonClicked()
-        {
-            Destroy(gameObject);
-        }
     }
 }