Questions, answers and comments you make on Ask cannot be self deleted. The only items which are deleted are when moderators determine they are against guidelines. This is a good reminder to always be careful about what you say online, because what you say on the internet, stays on the internet.
you don't have to delete any one of your questions here, because it is rarely read by others after several days, and nobody knows it if you did not use your own name. since the questions are read by others, it is already told by you, you can't delete it as if you never told. :p