Core Update 166: Perform spring clean of orphaned files

Core Update 166: Perform spring clean of orphaned files

On an IPFire installation that has been around since Core Update 110
(released April 28, 2017), these files have been identified as being
orphaned, comparing to a fresh installation of Core Update 164.

To avoid such a list of files agglomerating, persons responsible for a
Core Update should check whether an updated package contains deleted
files in its rootfile. If so, they should be deleted on existing systems
via update.sh as well.

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>