code: def deletecc(self, cclist, comment=None):
          
          vals = self.bugzilla.build_update(comment=comment,
                                            cc_remove=cclist)
          log.debug("deletecc: update=%s", vals)
  
          return self.bugzilla.update_bugs(self.bug_id, vals)
docs: Removes the given email addresses from the CC list for this bug.