These are leftovers from when fizzy-saas was a standalone repository.
Since it was moved into fizzy as a path gem, the production bundle
uses Gemfile.saas at the root. Nothing references saas/Gemfile.
Also removes saas/bin/rails (references nonexistent test/dummy app)
and saas/bin/rubocop (references nonexistent saas/.rubocop.yml),
both equally defunct standalone-repo leftovers.