Remove unnecessary DI

osu.Game/Screens/Select/BeatmapCarousel.cs

@@ -23,7 +23,6 @@ using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Cursor;
 using osu.Game.Input.Bindings;
 using osu.Game.Screens.Select.Carousel;
-using osu.Game.Rulesets;
 
 namespace osu.Game.Screens.Select
 {
@@ -146,9 +145,6 @@ namespace osu.Game.Screens.Select
         [Resolved]
         private BeatmapManager beatmaps { get; set; }
 
-        [Resolved]
-        private Bindable<RulesetInfo> decoupledRuleset { get; set; }
-
         [BackgroundDependencyLoader(permitNulls: true)]
         private void load(OsuConfigManager config)
         {