Remove the deprecated WithPublicEndpoint from otelhttp

[MrAlias]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.3%. Comparing base (fc62fd6) to head (9afbeb9).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #8267     +/-   ##
=======================================
- Coverage   82.3%   82.3%   -0.1%     
=======================================
  Files        193     193             
  Lines      13780   13778      -2     
=======================================
- Hits       11345   11343      -2     
  Misses      2030    2030             
  Partials     405     405             

Files with missing lines	Coverage Δ
instrumentation/net/http/otelhttp/config.go	82.5% <ø> (-0.6%)	⬇️

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[Copilot]

Pull request overview

This PR removes the deprecated WithPublicEndpoint function from the otelhttp instrumentation package, completing the deprecation cycle that was introduced in version 1.39.0. The function was a convenience wrapper that always returned true, and users should migrate to the more flexible WithPublicEndpointFn which allows conditional configuration based on the request.

• Removed the deprecated WithPublicEndpoint function from config.go
• Removed the associated test TestWithPublicEndpoint from handler_test.go
• Updated CHANGELOG.md to document the removal with migration guidance

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
instrumentation/net/http/otelhttp/config.go	Removed the deprecated WithPublicEndpoint function and its documentation
instrumentation/net/http/otelhttp/handler_test.go	Removed TestWithPublicEndpoint test; functionality is covered by TestWithPublicEndpointFn
CHANGELOG.md	Added removal entry under "Unreleased" section with migration guidance

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