I'm in an embarrassing situation:
I wrote an answer to a question. I got many upvotes and reputation for that answer. But that answer is flawed in a subtle way. Obviously those who upvoted did not see the flaw either. I will delete that answer and replace it by a new one where the flaw is rectified.
I definitely don't want my reputation to be increased for an answer that is flawed. Therefore the question:
When I delete/annul my own posting/answer, how can I ensure that any reputation increase due to upvotes is also annulled?