Integrate meta-seconorth-distro/remove_show_demo2

Commit: seco-ne/yocto/layers/meta-seconorth-distro@864f2426

demo: Remove guf-show-demo2

Removed guf-show-demo2 package since we do not use it anymore. If we need an additional demo instance again, we should use an additional systemd unit file instead of adding a complete package.

BCS 746-000810

(cherry picked from commit 4606414f)