Eliminate use of dead and deprecated imports and options in setup.py

[ni-jfitzger]

• This contribution adheres to CONTRIBUTING.md.
• I've updated CHANGELOG.md if applicable.
• [ ] I've added tests applicable for this pull request

What does this Pull Request accomplish?

Delete deprecated / unsupported imports and distribution options from setup.py. By doing this proactively, we can avoid being broken in the future.

According to GitHub Copilot, setuptools.command.test provides a way to setup for and run tests. It would happen in this case when users run python setup.py test.

The problems with that are:

1. We don't ship tests with our python packages
2. If someone has cloned the repo, we have guidelines for how to run tests and they don't involve making that call
3. 2 of the distribution options associated with this feature (tests_require and test_suite) are no longer recognized.
4. setuptools.command.test has been deprecated for years

For these reasons, it makes sense to just remove the import and everything related to it.

I also eliminated the setup_requires because it's considered deprecated and we won't be needing pytest-runner.

List issues fixed by this Pull Request below, if any.

• Fix Deprecated import: setuptools.command.test #2069

What testing has been done?

PR Checks

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.34%. Comparing base (afd791e) to head (8df73c6).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2070   +/-   ##
=======================================
  Coverage   91.33%   91.34%           
=======================================
  Files          66       66           
  Lines       16274    16274           
=======================================
+ Hits        14864    14865    +1     
+ Misses       1410     1409    -1     

Flag	Coverage Δ
codegenunittests	84.95% <ø> (ø)
nidcpowersystemtests	94.59% <ø> (+0.04%)	⬆️
nidcpowerunittests	89.53% <ø> (ø)
nidigitalsystemtests	92.20% <ø> (ø)
nidigitalunittests	68.45% <ø> (ø)
nidmmsystemtests	92.72% <ø> (ø)
nifakeunittests	87.24% <ø> (ø)
nifgensystemtests	94.86% <ø> (ø)
nimodinstsystemtests	73.85% <ø> (ø)
nimodinstunittests	94.20% <ø> (ø)
niscopesystemtests	92.94% <ø> (ø)
niscopeunittests	43.20% <ø> (ø)
nisesystemtests	91.50% <ø> (ø)
niswitchsystemtests	82.03% <ø> (ø)
nitclksystemtests	94.87% <ø> (ø)
nitclkunittests	98.26% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 1 file with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update afd791e...8df73c6. Read the comment docs.