code: def delete_tags(self, resource_ids, tags):
          
          if isinstance(tags, list):
              tags = {}.fromkeys(tags, None)
          params = {}
          self.build_list_params(params, resource_ids, 'ResourceId')
          self.build_tag_param_list(params, tags)
          return self.get_status('DeleteTags', params, verb='POST')
docs: Delete metadata tags for the specified resource ids.
  
          :type resource_ids: list
          :param resource_ids: List of strings
  
          :type tags: dict or list
          :param tags: Either a dictionary containing name/value pairs
                       or a list containing just tag names.
                       If you pass in a dictionary, the values must
                       match the actual tag values or the tag will
                       not be deleted.  If you pass in a value of None
                       for the tag value, all tags with that name will
                       be deleted.