code: def experiments_predictions_attachments_delete(self, experiment_id, run_id, resource_id):
          
          # Get experiment to ensure that it exists
          if self.experiments_get(experiment_id) is None:
              return False
          return self.predictions.delete_data_file_attachment(run_id, resource_id)
docs: Delete attached file with given resource identifier from a mode run.
  
          Raise ValueError if an image archive with the given resource identifier
          is attached to the model run instead of a data file.
  
  
          Parameters
          ----------
          experiment_id : string
              Unique experiment identifier
          model_id : string
              Unique identifier of model to run
          resource_id : string
              Unique attachment identifier
  
          Returns
          -------
          boolean
              True, if file was deleted. False, if no attachment with given
              resource identifier existed.