Switch all live media variants to use livesys-scripts

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

fedora-live-mate_compiz.ks

@@ -10,42 +10,7 @@
 part / --size 8192
 
 %post
-cat >> /etc/rc.d/init.d/livesys << EOF
-
-
-# make the installer show up
-if [ -f /usr/share/applications/liveinst.desktop ]; then
-  # Show harddisk install in shell dash
-  sed -i -e 's/NoDisplay=true/NoDisplay=false/' /usr/share/applications/liveinst.desktop ""
-fi
-mkdir /home/liveuser/Desktop
-cp /usr/share/applications/liveinst.desktop /home/liveuser/Desktop
-
-# and mark it as executable
-chmod +x /home/liveuser/Desktop/liveinst.desktop
-
-# rebuild schema cache with any overrides we installed
-glib-compile-schemas /usr/share/glib-2.0/schemas
-
-# set up lightdm autologin
-sed -i 's/^#autologin-user=.*/autologin-user=liveuser/' /etc/lightdm/lightdm.conf
-sed -i 's/^#autologin-user-timeout=.*/autologin-user-timeout=0/' /etc/lightdm/lightdm.conf
-#sed -i 's/^#show-language-selector=.*/show-language-selector=true/' /etc/lightdm/lightdm-gtk-greeter.conf
-
-# set MATE as default session, otherwise login will fail
-sed -i 's/^#user-session=.*/user-session=mate/' /etc/lightdm/lightdm.conf
-
-# Turn off PackageKit-command-not-found while uninstalled
-if [ -f /etc/PackageKit/CommandNotFound.conf ]; then
-  sed -i -e 's/^SoftwareSourceSearch=true/SoftwareSourceSearch=false/' /etc/PackageKit/CommandNotFound.conf
-fi
-
-# no updater applet in live environment
-rm -f /etc/xdg/autostart/org.mageia.dnfdragora-updater.desktop
-
-# 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="mate"/' /etc/sysconfig/livesys
 
 %end