Remove Windows Store Python testing from CI

[rmartin16]

• The underlying API to download this Python is no longer available to GitHub runners
• RE: Fallback to GitHub Python if Windows store Python download fails .github#65

PR Checklist:

• All new features have been tested
• All new features have been documented
• I have read the CONTRIBUTING.md file
• I will abide by the code of conduct

[rmartin16]

note: merge restrictions don't seem to be in place for this repo

[freakboy3742]

FWIW - the lack of merge restrictions is intentional; we need them off so we can rebuild and push the app binary direct to main. Mark that up as one more reason binaries shouldn't be in the repo.