Deletes a namespace fromt the triplestore

        args:
            namespace: the name of the namespace

def delete_namespace(self, namespace):
        """ Deletes a namespace fromt the triplestore

        args:
            namespace: the name of the namespace
        """

        # if not self.has_namespace(namespace):
        #     return "Namespace does not exists"

        # log = logging.getLogger("%s.%s" % (self.log_name,
        #                                    inspect.stack()[0][3]))
        # log.setLevel(self.log_level)

        url = self._make_url(namespace).replace("/sparql", "")
        result = requests.delete(url=url)
        if result.status_code == 200:
            log.critical(result.text)
            return result.text
        raise RuntimeError(result.text)