Removed SDL_uikitwindow

This was only needed as a workaround for buggy behavior in iOS 8

src/video/uikit/SDL_uikitwindow.m

@@ -53,32 +53,6 @@
 
 @end
 
-@interface SDL_uikitwindow : UIWindow
-
-- (void)layoutSubviews;
-
-@end
-
-@implementation SDL_uikitwindow
-
-- (void)layoutSubviews
-{
-#ifndef SDL_PLATFORM_VISIONOS
-    // Workaround to fix window orientation issues in iOS 8.
-    /* As of July 1 2019, I haven't been able to reproduce any orientation
-     * issues with this disabled on iOS 12. The issue this is meant to fix might
-     * only happen on iOS 8, or it might have been fixed another way with other
-     * code... This code prevents split view (iOS 9+) from working on iPads, so
-     * we want to avoid using it if possible. */
-    if (!UIKit_IsSystemVersionAtLeast(9.0)) {
-        self.frame = self.screen.bounds;
-    }
-#endif
-    [super layoutSubviews];
-}
-
-@end
-
 static bool SetupWindowData(SDL_VideoDevice *_this, SDL_Window *window, UIWindow *uiwindow, bool created)
 {
     SDL_VideoDisplay *display = SDL_GetVideoDisplayForWindow(window);
@@ -238,15 +212,15 @@ bool UIKit_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_Properti
         if (@available(iOS 13.0, tvOS 13.0, *)) {
             UIWindowScene *scene = GetActiveWindowScene();
             if (scene) {
-                uiwindow = [[SDL_uikitwindow alloc] initWithWindowScene:scene];
+                uiwindow = [[UIWindow alloc] initWithWindowScene:scene];
             }
         }
         if (!uiwindow) {
             // ignore the size user requested, and make a fullscreen window
 #ifdef SDL_PLATFORM_VISIONOS
-            uiwindow = [[SDL_uikitwindow alloc] initWithFrame:CGRectMake(0, 0, SDL_XR_SCREENWIDTH, SDL_XR_SCREENHEIGHT)];
+            uiwindow = [[UIWindow alloc] initWithFrame:CGRectMake(0, 0, SDL_XR_SCREENWIDTH, SDL_XR_SCREENHEIGHT)];
 #else
-            uiwindow = [[SDL_uikitwindow alloc] initWithFrame:data.uiscreen.bounds];
+            uiwindow = [[UIWindow alloc] initWithFrame:data.uiscreen.bounds];
 #endif
         }