Legacy python-tuf included a deployment recommendation of using `metadata` and `metadata.staged` directories. This recommendation does not exist anymore. I think, we can safely remove the related test metadata directory [`tests/repository_data/repository/metadata.staged`]( https://github.com/theupdateframework/python-tuf/tree/develop/tests/repository_data/repository/metadata.staged), which is no longer used and has become [out of sync](https://github.com/theupdateframework/python-tuf/commit/271d5b7810f83eb365a7d2dc603888047b45cb0f#diff-60d9351ce7407df0619fb1282063501dd4775bcd7b337fcc9e0152a5cb29e1b3).