code: def delete_ec2_role(self, role, mount_point='aws-ec2'):
          
          return self._adapter.delete('/v1/auth/{0}/role/{1}'.format(mount_point, role))
docs: DELETE /auth/<mount_point>/role/<role>
  
          :param role:
          :type role:
          :param mount_point:
          :type mount_point:
          :return:
          :rtype: