comments-bundle/src/Resources/contao/classes/Comments.php
public function purgeSubscriptions()
	{
		$objNotify = CommentsNotifyModel::findExpiredSubscriptions();

		if ($objNotify === null)
		{
			return;
		}

		while ($objNotify->next())
		{
			$objNotify->delete();
		}

		// Add a log entry
		$this->log('Purged the unactivated comment subscriptions', __METHOD__, TL_CRON);
	}
public function purgeSubscriptions()
	{
		$objNotify = CommentsNotifyModel::findExpiredSubscriptions();

		if ($objNotify === null)
		{
			return;
		}

		while ($objNotify->next())
		{
			$objNotify->delete();
		}

		// Add a log entry
		$this->log('Purged the unactivated comment subscriptions', __METHOD__, TL_CRON);
	}
Purge subscriptions that have not been activated within 24 hours