Deletes the item corresponding to ``id``.

def delete(self, id, id_name='id', **kwargs):
        """
        Deletes the item corresponding to ``id``.
        """
        response = self._new_response()
        if self._check_supported_op('delete', response):
            params = {'Key': {id_name: id}}
            self._call_ddb_method(self.table.delete_item, params, response)
            response.data = 'true'
        response.prepare()
        return response