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.