Remove broken CI tests

[nmerket]

Fixes #385

Pull Request Description

This is punting. I'm just removing the tests that were problematic. The new pandas version revealed that there are problems with the old test data that we keep in this repo, which was more directly the source of the test failures. Now that we have full integration tests set up and can run ResStock and soon ComStock in CI, we can test postprocessing in a more holistic way. I was trying to just edit the parquet files in the testing directory to match what was expected, but I would've had to do some weird things to make it work and at that point the tests were kind of meaningless. I'm going to add some more issues of tests that we should consider adding for a more complete and wholistic test coverage.

Checklist

Not all may apply

• Code changes (must work)
• Tests exercising your feature/bug fix (check coverage report on Checks -> BuildStockBatch Tests -> Artifacts)
• Coverage has increased or at least not decreased. Update minimum_coverage in .github/workflows/ci.yml as necessary.
• All other unit and integration tests passing
• Update validation for project config yaml file changes
• Update existing documentation
• Run a small batch run on Eagle to make sure it all works if you made changes that will affect Eagle
• Add to the changelog_dev.rst file and propose migration text in the pull request

[github-actions]

File	Coverage
All files	84%	✅
base.py	89%	✅
eagle.py	75%	✅
exc.py	57%	✅
local.py	50%	✅
postprocessing.py	84%	✅
utils.py	96%	✅
sampler/base.py	79%	✅
sampler/downselect.py	33%	✅
sampler/precomputed.py	93%	✅
sampler/residential_quota.py	61%	✅
test/test_docker.py	33%	✅
test/test_validation.py	97%	✅
workflow_generator/base.py	90%	✅
workflow_generator/commercial.py	53%	✅
workflow_generator/residential_hpxml.py	83%	✅

Minimum allowed coverage is 33%

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