Return standardized pipeline objects to be used for comparing

    Remove year, month, and day components of the startDateTime so that data
    pipelines with the same time of day but different days are considered
    equal.

def _cleaned(_pipeline_objects):
    """Return standardized pipeline objects to be used for comparing

    Remove year, month, and day components of the startDateTime so that data
    pipelines with the same time of day but different days are considered
    equal.
    """
    pipeline_objects = copy.deepcopy(_pipeline_objects)
    for pipeline_object in pipeline_objects:
        if pipeline_object['id'] == 'DefaultSchedule':
            for field_object in pipeline_object['fields']:
                if field_object['key'] == 'startDateTime':
                    start_date_time_string = field_object['stringValue']
                    start_date_time = datetime.datetime.strptime(start_date_time_string,
                                                                 "%Y-%m-%dT%H:%M:%S")
                    field_object['stringValue'] = start_date_time.strftime("%H:%M:%S")
    return pipeline_objects