ListManager gives you three ways to delete members through the web interface:
-Delete individual members by finding a member in Members, and selecting delete next to the address you'd like to delete.
-Delete multiple addresses by selecting Delete Many Members, and entering the email addresses you'd like to delete.
-Use Members: Find Members to search for the members you'd like to delete, and then use Delete All in This View to delete them.
More
1. Members
2. Members: Delete Members
1. Members: Delete Many Members
2. Members: Delete All in This View