That files is provided by apt not unattended-upgrades.
$ dpkg -S /etc/cron.daily/apt
apt: /etc/cron.daily/apt
** Changed in: unattended-upgrades (Ubuntu)
Status: New => Invalid
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unattended-upgrades in
Ubuntu.
https://bugs.launchpad.net/bugs/1374913
Title:
/etc/cron.daily/apt missing in 0.76ubuntu1
Status in unattended-upgrades package in Ubuntu:
Invalid
Bug description:
/etc/cron.daily/apt missing in 0.76ubuntu1 so that the auto update
won't work.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1374913/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp