Automated #nullable processing

osu.Game/Graphics/UserInterface/BasicSearchTextBox.cs

@@ -1,6 +1,8 @@
 // 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.
 
+#nullable disable
+
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osuTK;
@@ -23,4 +25,4 @@ namespace osu.Game.Graphics.UserInterface
             TextFlow.Padding = new MarginPadding { Right = 35 };
         }
     }
-}
+}