Revert "fixes a bunch of warnings"

This reverts commit d4d85b663f.

Content.Shared/Standing/StandingStateSystem.cs

@@ -12,6 +12,8 @@ namespace Content.Shared.Standing
 {
     public sealed class StandingStateSystem : EntitySystem
     {
+        [Dependency] private readonly SharedHandsSystem _sharedHandsSystem = default!;
+
         public bool IsDown(EntityUid uid, StandingStateComponent? standingState = null)
         {
             if (!Resolve(uid, ref standingState, false))