I can't see why you'd need to delete your account - just don't visit here, if you don't want to.
If you still want to do this, I suggest you click the red "!" on one of your own posts in this thread (you have to be logged-in), to report it to the moderator, and in the "report form" you can ask them to delete your account. That's what I suggest - but I'm not saying that is the only option...