If we use the CA process to register users, is it safe to delete the certlog.nsf database?

We have been using the CA process for about a year now. New user registrations and recertifications are no longer logged in certlog.nsf, but rather are stored in the ICL databases and read via the Admin4.nsf database. Since there are no entries in certlog.nsf since we switch to the CA process, is it even required to have the certlog.nsf databases anymore or can it be deleted?