Remove pytest run from release script (#8810)
Remove pytest run from release script (#8810)

Fixes #8802.

Also removed the unused `kgs` cruft while I was here, since it's leftover from the [initial release commit](https://github.com/certbot/certbot/commit/3c08b512c3b546528880a1353f6b8607307533a3) and I'm pretty sure we don't use that anymore.
stweil/letsencrypt,stweil/letsencrypt,letsencrypt/letsencrypt,lmcro/letsencrypt,letsencrypt/letsencrypt,lmcro/letsencrypt