Are You Sure You Want To Delete This Item?

YES.

Oddly enough, despite its title, Are You Sure You Want To Delete This Item? is when something or someone is already removed from the story. This can be done with permanent Bussing, Forgetting They Existed, Character Death, The Writer Killing Them Off, or retiring a character. There are many reasons why the creators are sure they'd want to delete that item: the "item" in question needs to be removed because of it causing problems in the story, the audience got bored with it and no longer wants it, it has real life issues, or there needs to be a Plot Screw (or some other plot-related reason).