This question already has an answer here:
This user has two questions. After he got the answer he needed on these questions, he replaced the text of each question with
question deleted question deleted
Answers to both questions were upvoted, and so the OP would not have been able to delete the question. The user clearly wants to get rid of the question (e.g. fear of embarrassment).
What should be done in this circumstance? Should we vote to delete the question, because the user wills it and because (in at least one case) the question was poor? Should we revert the blanking, notify the user, and hope he doesn't try to blank it again? Should we try to edit the original question into shape so the user won't be motivated to remove it?