Note: In an act of triage, this question was retitled and edited to become a request for technical support instead of a feature request - yet still be a question to match the high quality answer that was given. In case of a quality answer SE urges not deleting the question -

If your question has good answers, though, it's not fair to have those answers removed along with your question: other users put effort into helping you and even if you no longer want the answers, somebody else might. This is why the system prevents you from deleting answered questions most of the time.