kubuntu livecd's update_notifier need been disable

disable_update_notifier.diff for kubuntu livecd

casper (1.51) dapper; urgency=low

  [ Luke Yelavich ]
  * casper-bottom/30accessibility:
    - Removed stale reference to acessx_applet.
    - Fix some typos for gconf values that had to be set as lists.

  [ Colin Watson ]
  * Pass debian-installer/locale to /root's debconf db (closes: Malone
    #41896).
  * Identify ourselves as casper when communicating with debconf.
  * Factor out preseeding code into casper-preseed; this knows that it only
    needs to register a question if it fails to set it, which saves memory
    by avoiding debconf having to rewrite templates.dat.
  * Preseed kbd-chooser/method as well as debian-installer/keymap, so that
    kbd-chooser run from ubiquity picks up the selected keyboard (closes:
    Malone #42202).
  * Use new dpkg-reconfigure --no-reload option (debconf 1.4.72ubuntu6) to
    avoid needlessly rewriting templates.dat.

  [ Tollef Fog Heen ]
  * Add ... to the end of all usplash messages. Malone #43856
  * Add maybe_break casper-bottom to allow breaking before running bottom
    scripts. Malone #43860
  * Don't show the name of the live cd user that's added.
  * Mount COW filesystem if show-cow is present on the kernel command line.
    Malone #43687
  * Disable the Kubuntu update notifier too. Malone #43806
  * Disable hibernation and enable sleep where appropriate. Malone #23882

 -- Tollef Fog Heen <email address hidden> Thu, 11 May 2006 12:11:08 +0200

+ read -r _db_internal_line
+ RET=ok
+ case ${_db_internal_line%%[ ]*} in
+ return 0
+ '[' -n yes ']'
+ set +x
rm: cannot remove `/root/etc/xdg/autostart/update-notifier.desktop': No such file or directory

above are parts from casper.log, so the auto-update-notifier wasn't remove from livecd when booting. so please add if..elif for remove those desktop files.

I've verified that the update notifier doesn't show up on the current live cd.