Ты don't. But Ты can use the
link link at the bottom of any page to write to the staff to request to have your account deleted.
If Ты intend to open a new account, please make sure to contact the staff first BEFORE Ты create a секунда account, as multiple accounts from the same IP address can get Ты banned (and it is much еще work to get reinstated after a ban).
It sounds, though, like just not using the site anymore would suffice for you. Ты don't need to Удалить an account for that.