[packagekit] Deferred package removal

[Rohan Garg]

Hi
I had a quick discussion on IRC about this yesterday and was told to
post to the mailing list.

Feature :
A way to remove packages on reboot similar to the offline-trigger
functionality that upgrades packages

Use Case :
I have software that only needs to run once on first boot to configure
the system, and should get removed on reboot ( essentially a OEM app
to setup the installed system with a new username and password on
first boot )

Cheers
Rohan Garg