Remove HandleVideoResize call from SetWindowMode

This call was useful during development and testing with
output=opengl, but now it's no longer necessary.  This call causes
output=texture to go into initialization loop, which falls back to
surface, which we definitely do not want.

src/gui/sdlmain.cpp

@@ -681,7 +681,6 @@ finish:
 		SDL_SetWindowMinimumSize(sdl.window, w, h);
 	}
 
-	HandleVideoResize(width, height);
 	sdl.update_display_contents = true;
 	return sdl.window;
 }