Remove unnecessary fanciness about importing devices.

The name will go away when the function is exited, it does not
need to be explicitly deleted.
The name does not conflict with any other names in the method, to which
it is local.
There are no global 'devices'.

Signed-off-by: mulhern <amulhern@redhat.com>
Do not use udev info to get the name of the device.

This name is only used in the warning, and device.name seems like a better
choice.

Signed-off-by: mulhern <amulhern@redhat.com>