Remove ClearComboColours()

osu.Game/Beatmaps/Formats/IHasComboColours.cs

@@ -17,10 +17,5 @@ public interface IHasComboColours
         /// Adds combo colours to the list.
         /// </summary>
         void AddComboColours(params Color4[] colours);
-
-        /// <summary>
-        /// Clear current combo colours from the list.
-        /// </summary>
-        void ClearComboColours();
     }
 }

osu.Game/Skinning/SkinConfiguration.cs

@@ -48,8 +48,6 @@ public IReadOnlyList<Color4> ComboColours
 
         public void AddComboColours(params Color4[] colours) => colours.ForEach(c => comboColours.Add(c));
 
-        public void ClearComboColours() => comboColours.Clear();
-
         public Dictionary<string, Color4> CustomColours { get; set; } = new Dictionary<string, Color4>();
 
         public readonly Dictionary<string, string> ConfigDictionary = new Dictionary<string, string>();