You can't I'm afraid. You'll just have to make do with making your page blank, saying you're no longer a memeber and never coming back. But if you're really determined to be deleted you can ask for people to denunciar you because if enough do I think you should be deleted.
You shouldn't really care as you'd be dead but you could get someone to change your lema to the fact you're deceased or something. Hope it's alrigt if i answered that.
