[gnome-boxes] (4 commits) Non-fast-forward update to branch implement-model-filtering

[Felipe Borges <felipeborges src gnome org>]

The branch 'implement-model-filtering' 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:

  2769097... list-view: Remove ItemConnections and SizeGroup
  72ab26d... collection, views: Implement item filtering on the model

Commits added to the branch:

  4e53988... flatpak: Don't build spice-gtk with usbredir support (*)
  6295fa3... flatpak, spice-gtk: Build spice-gtk with polkit=disabled (*)
  f669baf... list-view: Remove ItemConnections and SizeGroup
  58533ee... collection, views: Implement item filtering on the model

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