Remove deprecated functions and widgets
GNOME Settings still has a considerable number of deprecated functions being used right now. It is not good for the health of the code base to have such a high number of of deprecated functions.
This is also a blocker for GTK4 migration.
- Deprecated functions are being used.
Goals & use cases
- Cleanup the code base.
- Make the code base more maintainable.
- Prevent potential bugs by removing dead code.
- No deprecated functions are still used.