chore: Removed transaction_id and legacy token count attributes from llm events for openai and langchain

[bizob2828]

Description

The UI ticket will land today. I needed to do this to properly manually test the integration.

Related Issues

Closes #2057

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.21%. Comparing base (666ae6e) to head (aec607a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2093      +/-   ##
==========================================
- Coverage   97.21%   97.21%   -0.01%     
==========================================
  Files         251      251              
  Lines       42398    42392       -6     
==========================================
- Hits        41216    41210       -6     
  Misses       1182     1182              

Flag	Coverage Δ
integration-tests-16.x	78.24% <ø> (-0.01%)	⬇️
integration-tests-18.x	78.22% <ø> (+<0.01%)	⬆️
integration-tests-20.x	78.23% <ø> (-0.01%)	⬇️
unit-tests-16.x	90.59% <ø> (-0.01%)	⬇️
unit-tests-18.x	90.57% <ø> (-0.01%)	⬇️
unit-tests-20.x	90.57% <ø> (-0.01%)	⬇️
versioned-tests-16.x	74.50% <ø> (-0.03%)	⬇️
versioned-tests-18.x	75.61% <ø> (-0.03%)	⬇️
versioned-tests-20.x	75.62% <ø> (-0.03%)	⬇️

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[bizob2828]

The UI changes haven't been deployed to production as of 3/22/24. Please check next week with the linked jira before merging