I answered a question which was then closed as off-topic. The answer was up-voted, so deemed interesting by someone. I'm wondering what should I do with my answer now. Should I delete or keep it? It's not a problem to lose reputation for that.
This question is similar to another here on meta, except in that case it was about an answer to a question flagged as duplicated. The accepted answer there makes perfect sense, but it doesn't in the case of a question being closed as off-topic.