Bug#923200: libpolkit-qt5-1-1 depends on libpam-systemd

[Demi <m@tfiu.de>]

I have to agree with Joshua -- programs like marble or kdenlive work
just fine without systemd, but this dependency keeps them from doing
so.

Since I have a couple of boxes that are pretty heavily tinkered with
(which makes them unattractive for systemd), I just tried it, apt-get
source-d libpolkit-qt5-1-1, removed the libpam-systemd dependency in
both places in debian/rules, built and installed the package, and the
(few) kde applications I've tried installed and ran without problem.

So -- it may be that some component of kde actually depends on
systemd, but given the wide-ranging consequences of this particular
dependency (essentially shutting out non-systemd boxes from KDE
applications) it'd be great if the dependency could be limited to
that particular component.