Author: Alexey Sokolov <alexey@...>
Date: 2012-09-03 (Mon, 03 Sep 2012)
Delete znc.service file for systemd.
It doesn't really belong here, as only a few distros use systemd.
Also it assumed that ZNC is installed to /usr and is run under "znc"
user. Currently nothing in ZNC does anything with system users.
I shouldn't have added it in the first place.