Drop references to ubuntu-netbook, obsolete since Ubuntu 11.04.

debian/changelog

@@ -5,6 +5,7 @@ livecd-rootfs (23.10.33) UNRELEASED; urgency=medium
     hard-coded list of packages.
   * Don't hard-code addition of xterm package on xubuntu, it's in the task
     already.
+  * Drop references to ubuntu-netbook, obsolete since Ubuntu 11.04.
 
  -- Steve Langasek <steve.langasek@ubuntu.com>  Wed, 06 Sep 2023 11:23:17 -0700
 

debian/tests/default-bootstraps

@@ -37,7 +37,6 @@ ALL_TRIPLETS="
  ubuntu-mate-core::
  ubuntu-mate-desktop::
  ubuntu-mate-live::
- ubuntu-netbook::
  ubuntu-server:live:ubuntu-server
  xubuntu::
  xubuntu:minimal:"

live-build/auto/config

@@ -824,11 +824,6 @@ case $PROJECT in
 		esac
 		;;
 
-	ubuntu-netbook)
-		add_task install minimal standard ubuntu-netbook
-		LIVE_TASK='netbook-live'
-		;;
-
 	mythbuntu)
 		add_task install minimal standard mythbuntu-desktop
 		LIVE_TASK='mythbuntu-live'