cocoa: Don't mark fullscreen-desktop windows as non-resizable.

Otherwise, we can't tile SDL apps in Spaces.

Fixes #4883.

src/video/cocoa/SDL_cocoawindow.m

@@ -944,11 +944,6 @@ Cocoa_UpdateClipCursor(SDL_Window * window)
         pendingWindowOperation = PENDING_OPERATION_NONE;
         [self setFullscreenSpace:NO];
     } else {
-        /* Unset the resizable flag. 
-           This is a workaround for https://bugzilla.libsdl.org/show_bug.cgi?id=3697
-         */
-        SetWindowStyle(window, [nswindow styleMask] & (~NSWindowStyleMaskResizable));
-
         if ((window->flags & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP) {
             [NSMenu setMenuBarVisible:NO];
         }