For the moment, the base-x group is required by the Workstation and
KDE environment groups, so we need to work around this by telling
KIWI to uninstall it after everything is installed instead of
excluding it from the beginning.
We do not need this group anymore since we have no real need for
Xorg or X11 session stuff. The few packages we do need from that
that are not X11 specific have been extracted and added in its place.
We do not want X11 session support on these images and we no longer
use Xorg for anything since we switched to Calamares for our
initial setup wizard for the KDE Plasma variant.
At this time, we do not intend to support the Cinnamon desktop due
to its reliance on X11 and the lack of interest by the upstream
Fedora Cinnamon SIG for ARM for their spin.
This mostly reverts commit a3c3a8137f.
