Removed the vi format comments from the source

Vim users can use the [editorconfig plugin](https://github.com/editorconfig/editorconfig-vim) to automatically set tab spacing for the SDL coding style.

Fixes https://github.com/libsdl-org/SDL/issues/6903

src/core/linux/SDL_fcitx.c

@@ -485,5 +485,3 @@ void SDL_Fcitx_PumpEvents(void)
         usleep(10);
     }
 }
-
-/* vi: set ts=4 sw=4 expandtab: */