refactor: Removed obsolete version code checks

[breautek]

Now that our Min SDK is 24, testing for >= N (API 24) and >= M (API 22) is obsolete as it will always be true. Simplify the codebase by removing the conditions and keeping only the API 24 or later codepath.

Platforms affected

Motivation and Context

Description

Testing

Manual build + npm test

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[codecov-commenter]

Codecov Report

Merging #1588 (05c0a66) into master (d4bfd50) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1588   +/-   ##
=======================================
  Coverage   72.13%   72.13%           
=======================================
  Files          21       21           
  Lines        1751     1751           
=======================================
  Hits         1263     1263           
  Misses        488      488           

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[erisu]

LGTM