This question already has an answer here:
I'd like to delete a question of mine that was downvoted and has close votes, so I flagged it and asked for a mod to delete it but they didn't. Why can it not be deleted? Here it is.
I can understand that users shouldn't be able to delete questions and answers that may be useful to others but in this case the community has decided it has no value. Also, following question edits, the answer with upvotes no longer answers it.