build-sys: Don't distribute generated udev rule

It contains hardcoded path to systemd-sysctl executable which
is /usr/lib/systemd/systemd-sysctl on latest stable release and
as such it will complain at runtime if rootprefix != prefix

[zj: readd the file to nodist_udevrules_DATA]

(cherry picked from commit e2eb18d5)
(cherry picked from commit 66f231f4)