Get rid of Americano
It's not maintained: last commit on the upstream repo https://github.com/cozy/americano/commit/4a4e2fa07f0785a83979100dd6f9b6032d8be147 didn't get a release, so I'm not even sure we get any benefit from it.
There are some fun interactions between americano and cozydb, but it seems nothing that would be hard to circumvent.