Unenroll a client.  Uses DELETE to /clients/<client> interface.

        :Args:
            * *client*: (str) Client's ID

def client_unenroll(self, client):
        """
        Unenroll a client.  Uses DELETE to /clients/<client> interface.

        :Args:
            * *client*: (str) Client's ID
        """
        client = self._client_id(client)
        response = self._delete(url.clients_id.format(id=client))
        self._check_response(response, 204)