Clean up KDE package lists

fedora-kde-minimization.ks only tried to remove scim* and iok.
iok hasn't existed since F30. scim* packages still exist, but
nothing requires or recommends any of them, and none of them are
listed as default or mandatory in comps, so I don't think this
does anything.

mariadb: we do still ship both mariadb and community-mysql, and
they have overlapping provides. However, the only thing that
requires 'mysql-server' is kf5-akonadi-server-mysql , and that
also recommends 'mariadb-server', which should break the tie
without needing these lines.

system-config-*: none of these exist any more.

desktop-backgrounds-basic: no longer listed in base-x.

gnome-disk-utility: we already drop the entire admin-tools
group above, so there's no need to try and drop one package from
it too.

kdeaccessibility and kdeartwork don't exist any more.

Commented-out lines were dropped, there's no point having
commented-out lines with no explanation why they're there.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

fedora-live-kde.ks

@@ -9,7 +9,6 @@
 
 %include fedora-live-kde-base.ks
 %include fedora-live-minimization.ks
-%include fedora-kde-minimization.ks
 
 # DVD payload
 part / --size=8000