qat: don't set device IDs in the plugin

[mythi]

Is your feature request related to a problem? Please describe.
QAT plugin needs custom apparmor rules since it fails (on certain distros) on the attempt to write to VFIO/UIO new_id. setupDeviceIDs() is somewhat legacy since the preferred approach is driver_override.

Describe the solution you'd like
the new_id mechanism was added way before we had the initcontainer support in place. furthermore, at least for vfio-pci we don't need it at all if the driver uses ids=8086:<qat VF dev IDs>.

the suggestion is to drop write attemps to new_id and move the corresponding functionality to qat-init.sh. With this, we can drop apparmor policies from the plugin.

Describe alternatives you've considered
N/A

Additional context
N/A