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