Help me delete my account content

I'm trying to sell my accont because Steemit is a fucking nazi organisation that likes to censor people with ideas they don't like (cite: they're just cunts).

I've had an offer of $50 for my account (if you're willing to pay more HMU), but they need me to delete all the Steemit and d.tube content I've added.

How the fuck do I delete stuff on here?