Remove player collection settings

osu.Game/Screens/Play/PlayerSettings/CollectionSettings.cs

@@ -1,35 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Game.Graphics.Sprites;
-using osu.Game.Overlays.Music;
-
-namespace osu.Game.Screens.Play.PlayerSettings
-{
-    public class CollectionSettings : PlayerSettingsGroup
-    {
-        public CollectionSettings()
-            : base("collections")
-        {
-        }
-
-        [BackgroundDependencyLoader]
-        private void load()
-        {
-            Children = new Drawable[]
-            {
-                new OsuSpriteText
-                {
-                    Text = @"Add current song to",
-                },
-                new CollectionsDropdown<PlaylistCollection>
-                {
-                    RelativeSizeAxes = Axes.X,
-                    Items = new[] { PlaylistCollection.All },
-                },
-            };
-        }
-    }
-}