Remove an unnecessary check in the if statement

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabPublicHandler.cpp

@@ -644,8 +644,7 @@ namespace AzToolsFramework
 
             // If the first entity id is a container entity id, then we need to mark its parent as the common owning instance because you
             // cannot detete an instance from itself.
-            if (commonOwningInstance->get().GetContainerEntityId() == firstEntityIdToDelete &&
-                !IsLevelInstanceContainerEntity(firstEntityIdToDelete))
+            if (commonOwningInstance->get().GetContainerEntityId() == firstEntityIdToDelete)
             {
                 commonOwningInstance = commonOwningInstance->get().GetParentInstance();
             }