chore(instrumentation-http): remove commented out code

[cjihrig]

Which problem is this PR solving?

There is commented code left over from #5743.

Fixes # N/A

Short description of the changes

This commit removes the commented out code.

Type of change

None of the provided options.

How Has This Been Tested?

• Run in the CI

Checklist:

• Followed the style guidelines of this project
• Unit tests have been added
• Documentation has been updated

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.16%. Comparing base (4dc99dc) to head (ef407f7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6062   +/-   ##
=======================================
  Coverage   95.16%   95.16%           
=======================================
  Files         316      316           
  Lines        9207     9207           
  Branches     2075     2075           
=======================================
  Hits         8762     8762           
  Misses        445      445           

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[maryliag]

I wouldn't consider this a fix, you can tag as chore, and no need for changelog

[otelbot]

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