reverted commit 35f154aa

Projekte/battleship/model/src/main/java/pp/battleship/model/ShipMap.java

@@ -105,9 +105,7 @@ public class ShipMap {
      * Removes all items from the map and triggers corresponding removal events for each.
      */
     public void clear() {
-        while (!items.isEmpty()) {
-            notifyListeners(new ItemRemovedEvent(items.removeFirst(), this));
-        }
+        new ArrayList<>(items).forEach(this::remove);
     }
 
     /**