Comment 17 for bug 1861481

I mean that if, on a normal 20.04 installation, I uninstall the el langpack, then
1) If I'm using GDM, universe apps show Greek,
2) If I'm using LightDM, universe apps show English (this one regressed in 19.10).

If we're modifying LightDM, I suggest to modify LightDM to not set LANGUAGE at all, not just in live CDs.
This is what GDM does and it works fine everywhere.