Convert PyMC recipe to noarch

[maresb]

After monitoring the situation for a while, I think the time has finally come to start seriously considering this. The pymc-base / pymc split seems to be working flawlessly, and all the platform-dependent stuff is taken care of by Aesara.

I'm in no rush to merge this. Indeed, this is slightly dangerous because we'd lose the extensive testing. (Noarch packages are only tested on Linux.) But PyMC is in principle completely platform-independent, so one hopes it should be fine.

Closes #51.

Checklist

• [X] Used a personal fork of the feedstock to propose changes
• [ ] Bumped the build number (if the version is unchanged)
• [ ] Reset the build number to 0 (if the version changed)
• [X] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• [X] Ensured the license file is being packaged.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[maresb]

@conda-forge-admin, please rerender

[maresb]

@conda-forge-admin, please rerender

[maresb]

@conda-forge-admin, please rerender

[maresb]

@conda-forge-admin, please rerender

[github-actions[bot]]

Hi! This is the friendly automated conda-forge-webservice.

I tried to rerender for you, but it looks like there was nothing to do.

This message was generated by GitHub actions workflow run https://github.com/conda-forge/pymc-feedstock/actions/runs/2931989011.

[twiecki]

Thanks @maresb, amazing to have gotten to this point!