I may be wrong but I believe this can only be done by the staff team, not sure what role however I imagine you will have to message Kerahna to have an account deleted. Alternatively you can just block all access to your profile page, log out and not use the account
Only Matt can delete accounts at this time. On your profile you can see a report button available. Go ahead and report your own profile and ask for your account to be deleted. Deleted accounts can never be restored again so please make sure this is what you really want to do.