Revert "Physics state initialization fix"

[romanc]

Description

Looks like pace tests are broken with the current version of PySHiELD physics. We tracked it down to the last (merge) commit. This PR reverts #38, which brings things back into a working condition.

Initial work to fix this in pace (see NOAA-GFDL/pace#134) didn't work out of the box.

Looks like the error crept in because of a stale/outdated CI run on the PR. Once we have the merge queue (e.g. PR #41) in place, we won't have this problem anymore.

How Has This Been Tested?

Running CI doesn't fail pace main tests as it does for #41.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas: N/A
• I have made corresponding changes to the documentation: N/A
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules: N/A
• New check tests, if applicable, are included: N/A
• Targeted model, if this change was triggered by a model need/shortcoming: N/A

[romanc]

@oelbert I can't assign reviewers in this repo, so here's a manual ping ...

[oelbert]

We do need to get this back in once we've figured out the problem :/

[romanc]

We do need to get this back in once we've figured out the problem :/

Let have a follow-up issue: #43

PS: I also can't merge, so feel free to push the button. Or - try your hotfix NOAA-GFDL/pace#134 with updating the pySHiELD submodule in pace. That might also square away the problem and render this PR (and issue #43) moot.

[oelbert]

I don't quite have the bandwidth for it at this moment, but I'll try to get to it when I do