Remove unit tests as being run as part of the pre-commit hook

[DonJayamanne]

Fixes #1986

This pull request:

• Has a title summarizes what is changing
• Includes a news entry file (remember to thank yourself!)

[codecov]

Codecov Report

Merging #2032 into master will decrease coverage by 0.08%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #2032 +/- ## ========================================== - Coverage 75.02% 74.94% -0.09%  ========================================== Files 307 307 Lines 14060 14060 Branches 2493 2493 ========================================== - Hits 10549 10537 -12  - Misses 3374 3381 +7  - Partials 137 142 +5

Impacted Files	Coverage Δ
src/client/debugger/PythonProcess.ts	45.83% <0%> (-5.42%)	⬇️
src/client/linters/lintingEngine.ts	90.26% <0%> (-0.89%)	⬇️
...rc/client/debugger/PythonProcessCallbackHandler.ts	54.27% <0%> (+0.65%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c066c32...4d5f456. Read the comment docs.

[d3r3kk]

@DonJayamanne I will prioritize getting the quick npm run test:unittest done today. Will likely require a bit of a hack to make the output how we want, but I'll add issues to counter that in future.