[mutter] (5 commits) Non-fast-forward update to branch bilelmoussaoui/drop-zenity

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

The branch 'bilelmoussaoui/drop-zenity' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  96d94f1... default-plugin: Drop default confirm display dialog
  0d37e81... core: Drop the default close dialog implementation
  5a7ec8b... x11/sm: Replace zenity with Clutter actors
  0591c1c... core: Drop zenity show_dialog

Commits added to the branch:

  7d3ff66... clutter/stage: Remove unused nullable annotation (*)
  6f79c2f... default-plugin: Drop default confirm display dialog
  c395a4f... core: Drop the default close dialog implementation
  484b49a... x11/sm: Replace zenity with Clutter actors
  06c1cba... core: Drop zenity show_dialog

(*) This commit already existed in another branch; no separate mail sent