def METHOD_NAME(self):
    """Cleap up our signals."""
    # pylint: disable=protected-access
    Command.course_published_signal.disconnect(
        openedx.core.djangoapps.content.course_overviews.signals._listen_for_course_publish
    )
    Command.course_published_signal.disconnect(
        lms.djangoapps.ccx.tasks.course_published_handler
    )
    Command.course_published_signal.disconnect(self.sample_receiver_1)
    Command.course_published_signal.disconnect(self.sample_receiver_2)
    super().METHOD_NAME()