Sample.AWS.Tests - nullable

[Kielek]

Towards #894

Changes

Sample.AWS.Tests - nullable
Opportunistic semi-auto code cleanup

For significant contributions please make sure you have completed the following items:

• [ ] Appropriate CHANGELOG.md updated for non-trivial changes
• [ ] Design discussion issue #
• [ ] Changes in public API reviewed

[codecov]

Codecov Report

Merging #1304 (84a68a1) into main (75d7622) will increase coverage by 0.01%.
The diff coverage is 50.00%.

❗ Current head 84a68a1 differs from pull request most recent head 7b145c3. Consider uploading reports for the commit 7b145c3 to get more accurate results

@@            Coverage Diff             @@
##             main    #1304      +/-   ##
==========================================
+ Coverage   74.49%   74.50%   +0.01%     
==========================================
  Files         266      266              
  Lines        9659     9657       -2     
==========================================
  Hits         7195     7195              
+ Misses       2464     2462       -2     

Files Changed	Coverage
...lemetry.Sampler.AWS/AWSXRayRemoteSamplerBuilder.cs	0.00%
...c/OpenTelemetry.Sampler.AWS/SamplingRuleApplier.cs	100.00%

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[srprash]

Thanks!