The clearUnconfirmed task is still included in the core application but throws an error when it runs because the hive feature tables don't exist anymore:
2C124/7 There was an issue running this task, please refer to the system log for further information.
DELETE FROM `core_hive_subscribers` WHERE subscribe_confirmed=0 AND subscribe_date<=1722521047
IPS\Db\Exception: Table 'dev47.core_hive_subscribers' doesn't exist (1146)
#0 /dev47/system/Db/Db.php(1300): IPS\_Db->preparedQuery