Spree used to give you more options to configure ActionMailer but our
setup is much simpler. We can remove unused code.
The removed option was never used by OFN and defaulted to true. We don't
need a database migration because the value isn't set in the database.
DEPRECATION WARNING: `#deliver` is deprecated and will be removed in Rails 5. Use `#deliver_now` to deliver immediately or `#deliver_later` to deliver through Active Job.
This was due to an incompatibility between two recent PRs: 5763 and
5733. PR 5733 did not take into account 5763 (the confirm email method was removed) and so the specs introduced
were broken.
We didn't actually change any logic in our version of the Spree
environment file but if we do that in the future, we want to be sure
that it takes effect. Our file was ignored and not loaded before.
