Remove some unused fields again-ing

Content.Server/Actions/Actions/DisarmAction.cs

@@ -68,7 +68,6 @@ namespace Content.Server.Actions.Actions
             if (args.Target == args.Performer || !EntitySystem.Get<ActionBlockerSystem>().CanAttack(args.Performer)) return;
 
             var random = IoCManager.Resolve<IRobustRandom>();
-            var audio = EntitySystem.Get<AudioSystem>();
             var system = EntitySystem.Get<MeleeWeaponSystem>();
 
             var diff = args.Target.Transform.MapPosition.Position - args.Performer.Transform.MapPosition.Position;