fixes a bunch of warnings

Content.Server/Hands/Systems/HandsSystem.cs

@@ -33,7 +33,6 @@ namespace Content.Server.Hands.Systems
     [UsedImplicitly]
     internal sealed class HandsSystem : SharedHandsSystem
     {
-        [Dependency] private readonly InteractionSystem _interactionSystem = default!;
         [Dependency] private readonly StackSystem _stackSystem = default!;
         [Dependency] private readonly HandVirtualItemSystem _virtualItemSystem = default!;
         [Dependency] private readonly ActionBlockerSystem _actionBlockerSystem = default!;