wayland: Don't unset min/max values when entering fullscreen via a compositor event

If the compositor is entering fullscreen and hasn't removed any constraints itself, it's already too late at this point.  Remove the unnecessary call.

Restoring the limits when exiting fullscreen is still required, though, as they may have been removed when entering fullscreen via an SDL request.

src/video/wayland/SDL_waylandwindow.c

@@ -474,7 +474,6 @@ UpdateWindowFullscreen(SDL_Window *window, SDL_bool fullscreen)
             wind->in_fullscreen_transition = SDL_TRUE;
             SDL_SetWindowFullscreen(window, wind->fullscreen_flags);
             wind->in_fullscreen_transition = SDL_FALSE;
-            SetMinMaxDimensions(window, SDL_FALSE);
         }
     } else {
         /* Don't change the fullscreen flags if the window is hidden or being hidden. */