drop gsound & freedesktop-sound-theme
I wanted to work on porting gnome-clocks to use feedbackd in order to replace
gsound. Sadly, I have ended up noticing that it requires gsound for the daemon part which is something we should ship with the flatpak version.
gsound depends on libcanberra which is a very old an unmaintained library. It was removed from the GNOME SDK in 3.36 and there's a hope to have some basic "play this for me" API in GTK.
The freedesktop-sound-theme was also removed from the fdo SDK as nothing uses it besides Clocks & g-c-c, I don't see why the necessary sounds are not shipped within feedbackd, other than some licensing issue?