Remove IInteractHand (#7601)

* Plantholder

* Strap

* Finish him

* Mirror review stuff

Content.Shared/Interaction/InteractHand.cs

@@ -1,24 +1,7 @@
-using System;
 using JetBrains.Annotations;
-using Robust.Shared.Analyzers;
-using Robust.Shared.GameObjects;
 
 namespace Content.Shared.Interaction
 {
-    /// <summary>
-    /// This interface gives components behavior when being clicked on by a user with an empty hand
-    /// who is in range and has unobstructed reach of the target entity (allows inside blockers).
-    /// </summary>
-    [RequiresExplicitImplementation]
-    public interface IInteractHand
-    {
-        /// <summary>
-        /// Called when a player directly interacts with an empty hand when user is in range of the target entity.
-        /// </summary>
-        [Obsolete("Use InteractHandEvent instead")]
-        bool InteractHand(InteractHandEventArgs eventArgs);
-    }
-
     public sealed class InteractHandEventArgs : EventArgs, ITargetedInteractEventArgs
     {
         public InteractHandEventArgs(EntityUid user, EntityUid target)

Content.Shared/Interaction/SharedInteractionSystem.cs

@@ -272,17 +272,6 @@ namespace Content.Shared.Interaction
             if (message.Handled)
                 return;
 
-            var interactHandEventArgs = new InteractHandEventArgs(user, target);
-            var interactHandComps = AllComps<IInteractHand>(target).ToList();
-            foreach (var interactHandComp in interactHandComps)
-            {
-                // If an InteractHand returns a status completion we finish our interaction
-#pragma warning disable 618
-                if (interactHandComp.InteractHand(interactHandEventArgs))
-#pragma warning restore 618
-                    return;
-            }
-
             // Else we run Activate.
             InteractionActivate(user, target,
                 checkCanInteract: false,
@@ -439,7 +428,7 @@ namespace Content.Shared.Interaction
             CollisionGroup collisionMask = CollisionGroup.Impassable,
             Ignored? predicate = null,
             bool popup = false)
-        {;   
+        {;
             Ignored combinedPredicate = e => e == origin || (predicate?.Invoke(e) ?? false);
 
             var inRange = InRangeUnobstructed(Transform(origin).MapPosition, other, range, collisionMask, combinedPredicate);