examples/renderer/01-clear: No longer needs vsync.

This now chooses the next color based on time, so it won't go wild if the
framerate is unbounded.

examples/renderer/01-clear/clear.c

@@ -26,7 +26,7 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
         SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Couldn't create window/renderer!", SDL_GetError(), NULL);
         return SDL_APP_FAILURE;
     }
-    SDL_SetRenderVSync(renderer, 1);  /* try to show frames at the monitor refresh rate. */
+
     return SDL_APP_CONTINUE;  /* carry on with the program! */
 }