Fix H-pulling? (#4425)

In retrospect the answer is easy, but man this took a while.

Content.Shared/Pulling/Systems/SharedPullingSystem.cs

@@ -62,7 +62,6 @@ namespace Content.Shared.Pulling
 
             CommandBinds.Builder
                 .Bind(ContentKeyFunctions.MovePulledObject, new PointerInputCmdHandler(HandleMovePulledObject))
-                .Bind(ContentKeyFunctions.ReleasePulledObject, InputCmdHandler.FromDelegate(HandleReleasePulledObject))
                 .Register<SharedPullingSystem>();
         }
 
@@ -194,28 +193,6 @@ namespace Content.Shared.Pulling
             return false;
         }
 
-        private void HandleReleasePulledObject(ICommonSession? session)
-        {
-            var player = session?.AttachedEntity;
-
-            if (player == null)
-            {
-                return;
-            }
-
-            if (!TryGetPulled(player, out var pulled))
-            {
-                return;
-            }
-
-            if (!pulled.TryGetComponent(out SharedPullableComponent? pullable))
-            {
-                return;
-            }
-
-            pullable.TryStopPull();
-        }
-
         private void SetPuller(IEntity puller, IEntity pulled)
         {
             _pullers[puller] = pulled;