code: def delete_role(self, role_name, mount_point='approle'):
          
  
          return self._adapter.delete('/v1/auth/{0}/role/{1}'.format(mount_point, role_name))
docs: DELETE /auth/<mount_point>/role/<role name>
  
          :param role_name:
          :type role_name:
          :param mount_point:
          :type mount_point:
          :return:
          :rtype: