MFH: r439799

Drop machine-id path substitution in post-patch.

r431187 stopped using a non-default path for dbus's machine-id file, so the sed
call here is unnecessary and produces warnings at runtime:

IBUS-WARNING **: Unable to load /var/db/dbus/machine-id: Failed to open file
'/var/db/dbus/machine-id': No such file or directory

PR: 218812
Submitted by: Tatsuki Makino <tatsuki_makino@hotmail.com>
Approved by: Henry Hu <henry.hu.sh@gmail.com> (maintainer)

Approved by: ports-secteam (miwi)