If it’s already been “removed for editing” and you don’t edit it, you can abandon it and it disappears. If you don’t feel it needs editing, take it up with the mods.
Nothing, but it will sit there nagging you until you either edit or abandon. Also, keep in mind that it does count toward your questions per day limit.
It’s left there, alone, cold, weeping… leaving you with two choices:
1. Edit or abandon it.
2. Leave it there, while your subconscious eats away at you, losing sleep, and eventually entering an insane asylum. All just for leaving that question in limbo. Is it really worth it?