Remove janus_core as dependency, instead require external setup

[oerc0122]

No description provided.

[ajjackson]

I think you could clear the RabbitMQ complaints out of test output by changing the workflow to use 3.8.14 instead of "latest".

I can't find reference to RabbitMQ version constraints in the AiiDA docs any more, so it might be that the latest aiida-core is happier with an up-to-date RabbitMQ.

[ElliottKasoar]

I think you could clear the RabbitMQ complaints out of test output by changing the workflow to use 3.8.14 instead of "latest".

I can't find reference to RabbitMQ version constraints in the AiiDA docs any more, so it might be that the latest aiida-core is happier with an up-to-date RabbitMQ.

We're unfortunately not currently compatible with the last few releases of aiida-core, but it also seems to still have the same compatibility issues with the default configuration, the note is just a bit hidden away: https://aiida.readthedocs.io/projects/aiida-core/en/latest/installation/troubleshooting.html#rabbitmq-incompatibility.

[ajjackson]

The default RabbitMQ timeout of 30 mins should be fine for CI, so another option is to disable the warning with verdi config set warnings.rabbitmq_version False