Switch all live media variants to use livesys-scripts

Reference: https://fedoraproject.org/wiki/Changes/ModernizeLiveMedia

fedora-live-lxqt.ks

@@ -16,42 +16,8 @@ dracut-config-generic
 %end
 
 %post
-# add initscript
-cat >> /etc/rc.d/init.d/livesys << EOF
-
-# set up autologin for user liveuser
-if [ -f /etc/sddm.conf ]; then
-sed -i 's/^#User=.*/User=liveuser/' /etc/sddm.conf
-sed -i 's/^#Session=.*/Session=lxqt.desktop/' /etc/sddm.conf
-else
-cat > /etc/sddm.conf << SDDM_EOF
-[Autologin]
-User=liveuser
-Session=lxqt.desktop
-SDDM_EOF
-fi
-
-# show liveinst.desktop on desktop and in menu
-sed -i 's/NoDisplay=true/NoDisplay=false/' /usr/share/applications/liveinst.desktop
-mkdir /home/liveuser/Desktop
-cp -a /usr/share/applications/liveinst.desktop /home/liveuser/Desktop/
-
-# set up preferred apps 
-cat > /etc/xdg/libfm/pref-apps.conf << FOE 
-[Preferred Applications]
-WebBrowser=qupzilla.desktop
-FOE
-
-# no updater applet in live environment
-rm -f /etc/xdg/autostart/org.mageia.dnfdragora-updater.desktop
-
-dnf -y remove dracut-config-generic
-
-# make sure to set the right permissions and selinux contexts
-chown -R liveuser:liveuser /home/liveuser/
-restorecon -R /home/liveuser/
-
-EOF
+# set livesys session type
+sed -i 's/^livesys_session=.*/livesys_session="lxqt"/' /etc/sysconfig/livesys
 
 %end