Cleanup warnings: CS0414 (#39748)

* Cleanup

* Fix

Content.Client/Stack/StackSystem.cs

@@ -12,7 +12,6 @@ namespace Content.Client.Stack
     {
         [Dependency] private readonly AppearanceSystem _appearanceSystem = default!;
         [Dependency] private readonly ItemCounterSystem _counterSystem = default!;
-        [Dependency] private readonly SpriteSystem _sprite = default!;
 
         public override void Initialize()
         {