[PATCH] Remove unused selftest env variables + old build_farm testsuites

[Jeremy Allison]

On Tue, Mar 12, 2019 at 09:32:13AM +1300, Tim Beale via samba-technical wrote:
> I started out removing a couple of unused selftest environment variables
> and ended up ripping out all the old build_farm testsuites.
> 
> Also moved some of the environment variable-related code out of
> selftest.pl and into Samba.pm, which is a bit closer to where the
> variables are all actually defined.
> 
> CI pass: https://gitlab.com/catalyst-samba/samba/pipelines/51171570
> 
> Review appreciated. Thanks.

Thanks for all the cleanup work Tim, it is *much* appreciated !

Jeremy.