No removal option to be found here.
Ask them to delete your account manually. Use the form found here: https://who.is/who.is/help
URLS:
http://who.is
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.