[Bug 2147086] Update Released

[Timo Aaltonen]

The verification of the Stable Release Update for livecd-rootfs has
completed successfully and the package is now being released to
-updates.  Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/2147086

Title:
  [SRU] Fix noble image by dropping unused sb build

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Noble:
  Fix Released

Bug description:
  [ Impact ]

    * The current noble image fails to build since we try to build a
  snap model for sb. This one used to be synced by the Cloud team which
  doesn’t need it anymore.

    * We moved our snaps to core24, which means that this now unused
  models would need to be updated, signed, and included in the new
  livecd-rootfs for every snaps transition. The goal is to minimize now
  the maintainance cost by avoiding doing this update and remove it for
  future transition, as this is not used at all anymore.

    * The impact is at ISO build time. The option from the installer
  using that model has never been available by our end user.

  [ Test Plan ]

   1. Start a noble image build
   2. Ensure the build is succesful
   3. Try to install this Ubuntu desktop image. Installation should be successful
   4. After rebooting on the installed system, the model "classic-model.model" should no be present on the system.

  [ Where problems could occur ]

   * This is straightfoward to detect: the rootfs either can’t build, of
  the installed system can’t boot. This could be detected before
  landing.

  [ Other Info ]

   * I did a rootfs build in my ppa: https://launchpad.net/~ubuntu-wsl-
  dev/+livefs/ubuntu/noble/wsl/+build/936162 and built a rootfs from it:
  https://launchpad.net/~ubuntu-wsl-dev/+livefs/ubuntu/noble/wsl.

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