Just visit
http://mail.clubs.uci.edu/mailman/listinfo to find the list(s) to which you are subscribed.
Click the link to visit the list info page. From there, type your e-mail address in the
Subscribers section, and click
Unsubscribe or edit options. On the next page, click the
Unsubscribe button. You will receive an e-mail message with instructions on how to confirm your removal from the list.