code: def delete_publisher_asset(self, publisher_name, asset_type=None):
          
          route_values = {}
          if publisher_name is not None:
              route_values['publisherName'] = self._serialize.url('publisher_name', publisher_name, 'str')
          query_parameters = {}
          if asset_type is not None:
              query_parameters['assetType'] = self._serialize.query('asset_type', asset_type, 'str')
          self._send(http_method='DELETE',
                     location_id='21143299-34f9-4c62-8ca8-53da691192f9',
                     version='5.1-preview.1',
                     route_values=route_values,
                     query_parameters=query_parameters)
docs: DeletePublisherAsset.
          [Preview API] Delete publisher asset like logo
          :param str publisher_name: Internal name of the publisher
          :param str asset_type: Type of asset. Default value is 'logo'.