[onecollector] Remove ext.dt.traceFlags

[CodeBlanch]

Fixes #1313

Changes

• Removes ext.dt.traceFlags because it isn't currently supported by OneCollector

TODOs

• Appropriate CHANGELOG.md updated for non-trivial changes

[codecov]

Codecov Report

Merging #1345 (4743734) into main (c4784de) will increase coverage by 0.63%.
The diff coverage is n/a.

❗ Current head 4743734 differs from pull request most recent head 305bb93. Consider uploading reports for the commit 305bb93 to get more accurate results

@@            Coverage Diff             @@
##             main    #1345      +/-   ##
==========================================
+ Coverage   73.86%   74.50%   +0.63%     
==========================================
  Files         266      266              
  Lines        9600     9655      +55     
==========================================
+ Hits         7091     7193     +102     
+ Misses       2509     2462      -47     

Files Changed	Coverage
...rialization/LogRecordCommonSchemaJsonSerializer.cs	ø

[reyang]

@CodeBlanch what's the plan for testing these changes in the future?

[CodeBlanch]

@CodeBlanch what's the plan for testing these changes in the future?

@reyang Good question! I have an integration test I spun up locally to verify this. My plan as a separate work stream is to add that test based on an envvar key (or two) and possibly a workflow which uses a secret (assuming GitHub has such a thing). Taking a bit of care so I don't leak the key/spam the service.