GDM: remove visible user list Was: Re: Lucid changed background color

[Tom H]

> You could also use the GDM2Setup utility from the Launchpad PPA:
> https://launchpad.net/gdm2setup
> It adds the old config options back in for the login experience, such as
> Userlist control.

:)

I was wondering whether anyone would bring back the old functionality
(why did Gnome deep-six it?!).