Edits made by users who do not have edit privileges are placed in a queue until it is peer reviewed.
E.g., I edited someone else's answer. but changed my mind. If I'd edited my own question/answer, there would be a "Rollback" button, but there's no such button in the scenario I'm describing (at least none that I can see).
This is more relevant today because users can only have at most five edits waiting in the queue, and allowing one to cancel an edit would permit them to free up one of their five pending edits for something else.
Is there a way to remove one's edit from the peer review queue?