cleanup: remove SelectMSVCRuntime.cmake

[teo-tsirpanis]

Vcpkg already contains this logic by itself and it might produce wrong results if vcpkg is not being used.

---

This change is 

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[conventional-commit-lint-gcf]

🤖 I detect that the PR title and the commit message differ and there's only one commit. To use the PR title for the commit history, you can use Github's automerge feature with squashing, or use automerge label. Good luck human!

-- conventional-commit-lint bot
https://conventionalcommits.org/

[devbww]

/gcbrun

[devbww]

/gcbrun

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.20%. Comparing base (033cda3) to head (5fb3979).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13777      +/-   ##
==========================================
- Coverage   93.20%   93.20%   -0.01%     
==========================================
  Files        2237     2237              
  Lines      193674   193674              
==========================================
- Hits       180522   180520       -2     
- Misses      13152    13154       +2     

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