def METHOD_NAME():
    op.drop_column("users", "new_notifications_enabled")
    op.drop_column("users", "last_digest_sent")
    op.drop_index(op.f("ix_notification_deliveries_notification_id"), table_name="notification_deliveries")
    op.drop_table("notification_deliveries")
    op.drop_table("notifications")
    op.drop_index(op.f("ix_notification_preferences_user_id"), table_name="notification_preferences")
    op.drop_table("notification_preferences")