Fix CI fail

osu.Game.Tests/Visual/Gameplay/TestSceneFailingLayer.cs

@@ -15,7 +15,7 @@ namespace osu.Game.Tests.Visual.Gameplay
     {
         private FailingLayer layer;
 
-        private Bindable<bool> enabledHUD = new Bindable<bool>();
+        private readonly Bindable<bool> enabledHUD = new Bindable<bool>();
 
         [Resolved]
         private OsuConfigManager config { get; set; }

osu.Game/Screens/Play/HUDOverlay.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using Microsoft.Diagnostics.Runtime.Interop;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.IEnumerableExtensions;