Merge branch 'igc-deadcoding'

Dr. David Alan Gilbert says:

====================
igc deadcoding

This set removes some functions that are entirely unused
and have been since ~2018.
====================

Link: https://patch.msgid.link/20250102174142.200700-1-linux@treblig.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>