code: def clean_out_user(self, name_id):
          
  
          lid = self.ident.find_local_id(name_id)
          logger.info("Clean out %s", lid)
  
          # remove the authentications
          try:
              for _nid in [decode(x) for x in self.ident.db[lid].split(" ")]:
                  try:
                      self.session_db.remove_authn_statements(_nid)
                  except KeyError:
                      pass
          except KeyError:
              pass
  
          return lid
docs: Remove all authentication statements that belongs to a user identified
          by a NameID instance
  
          :param name_id: NameID instance
          :return: The local identifier for the user