delete some user from the public role

From: Claudia Holzer (ClaudiaHolzer_at_discussions.microsoft.com)
Date: 09/09/04 

Date: Thu, 9 Sep 2004 14:21:14 -0700

I like to know if I can delete some user for the public role?. When I create
some user, by default he is assign to the public role, if I assign some other
role, I can't delete the link between the user and the public role. Thanks