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/SDL_dataqueue.c

@@ -325,5 +325,3 @@ SDL_ReserveSpaceInDataQueue(SDL_DataQueue *queue, const size_t len)
     queue->queued_bytes += len;
     return packet->data;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */