Delete object in container

        :param container: container name (Container is equivalent to
                          Bucket term in Amazon).
        :param obj: object name (Object is equivalent to
                    Key term in Amazon).

def delete_object(self, container, obj, **kwargs):
        """Delete object in container

        :param container: container name (Container is equivalent to
                          Bucket term in Amazon).
        :param obj: object name (Object is equivalent to
                    Key term in Amazon).
        """
        try:
            LOG.debug('delete_object() with %s is success.', self.driver)
            return self.driver.delete_object(container, obj, **kwargs)
        except DriverException as e:
            LOG.exception('download_object() with %s raised\
                            an exception %s.', self.driver, e)