code: def delete_exchange(self, vhost, name):
          
          vhost = quote(vhost, '')
          name = quote(name, '')
          path = Client.urls['exchange_by_name'] % (vhost, name)
          self._call(path, 'DELETE')
          return True
docs: Delete the named exchange from the named vhost. The API returns a 204
          on success, in which case this method returns True, otherwise the
          error is raised.
  
          :param string vhost: Vhost where target exchange was created
          :param string name: The name of the exchange to delete.
          :returns bool: True on success.