Be logged in. Then use the direct link to remove your account.
URLS:
http://del.icio.us
https://settings.delicious.com/settings/deactivate
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.