Comment # 16 on bug 1231006 from Stefan Hundhammer

BTW everybody reading this please note that there is still the original
'USERDEL_CMD' parameter in /etc/login.defs. This has been there upstream for a
long time; it is meant for the site admin to add commands to be executed when
deleting a user account.

The SUSE-specific counterparts USERADD_CMD, USERDEL_PRECMD, USERDEL_POSTCMD had
been added on top of that because... reasons (?!?). That's the ones that are
now gone, and that caused problems here.