Boxes CI tests no longer work

[spypsy]

These were previously run by downloading the yarn-project and running a docker-compose with that image running the tests from yarn-project/boxes/....

Since boxes is no longer included in yarn-project directory this doesn't work anymore. In fact no Docker image is being built that includes the boxes currently.

[charlielye]

I'm giving this thought. Will propose best course of action soon.

[charlielye]

Resolving as part of: #3727