code: def delete(self, *args, **kwargs):
          
          json_data = request.get_json() or {}
  
          relationship_field, model_relationship_field, related_type_, related_id_field = self._get_relationship_data()
  
          if 'data' not in json_data:
              raise BadRequest('You must provide data with a "data" route node', source={'pointer': '/data'})
          if isinstance(json_data['data'], dict):
              if 'type' not in json_data['data']:
                  raise BadRequest('Missing type in "data" node', source={'pointer': '/data/type'})
              if 'id' not in json_data['data']:
                  raise BadRequest('Missing id in "data" node', source={'pointer': '/data/id'})
              if json_data['data']['type'] != related_type_:
                  raise InvalidType('The type field does not match the resource type', source={'pointer': '/data/type'})
          if isinstance(json_data['data'], list):
              for obj in json_data['data']:
                  if 'type' not in obj:
                      raise BadRequest('Missing type in "data" node', source={'pointer': '/data/type'})
                  if 'id' not in obj:
                      raise BadRequest('Missing id in "data" node', source={'pointer': '/data/id'})
                  if obj['type'] != related_type_:
                      raise InvalidType('The type provided does not match the resource type',
                                        source={'pointer': '/data/type'})
  
          self.before_delete(args, kwargs, json_data=json_data)
  
          obj_, updated = self._data_layer.delete_relationship(json_data,
                                                               model_relationship_field,
                                                               related_id_field,
                                                               kwargs)
  
          status_code = 200
          result = {'meta': {'message': 'Relationship successfully updated'}}
  
          if updated is False:
              result = ''
              status_code = 204
  
          final_result = self.after_delete(result, status_code)
  
          return final_result
docs: Delete relationship(s)