ci: remove 2.21 backport action

[brettlangdon]

This is no longer necessary, we are not trying to force all bug fixes to 2.21 branch

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[erikayasuda]

🎉

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 278 ± 3 ms.

The average import time from base is: 284 ± 7 ms.

The import time difference between this PR and base is: -6.5 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.387 ms (0.86%)

ddtrace.bootstrap.sitecustomize 1.695 ms (0.61%)

ddtrace.bootstrap.preload 1.695 ms (0.61%)

ddtrace.internal.remoteconfig.client 0.752 ms (0.27%)

ddtrace 0.692 ms (0.25%)

ddtrace.internal._unpatched 0.033 ms (0.01%)

json 0.033 ms (0.01%)

json.decoder 0.033 ms (0.01%)

re 0.033 ms (0.01%)

enum 0.033 ms (0.01%)

types 0.033 ms (0.01%)

[erikayasuda]

@brettlangdon The codeowners job keeps failing because it's trying to resolve for way too many files? 🤔

[brettlangdon]

@brettlangdon The codeowners job keeps failing because it's trying to resolve for way too many files? 🤔

yeah, it is weird, it sometimes struggles to find the changed files, so then defaults to all files in the repo

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-07-14 19:34:37

Comparing candidate commit c3e1f59 in PR branch brettlangdon/2.21.backport.action with baseline commit b4bdef9 in branch main.

Found 0 performance improvements and 3 performance regressions! Performance is the same for 537 metrics, 2 unstable metrics.

scenario:iastaspects-format_map_aspect

• 🟥 execution_time [+457.878ns; +511.964ns] or [+14.085%; +15.748%]

scenario:iastaspectsospath-ospathjoin_aspect

• 🟥 execution_time [+0.983µs; +1.063µs] or [+15.983%; +17.283%]

scenario:iastaspectsospath-ospathnormcase_aspect

• 🟥 execution_time [+370.666ns; +429.718ns] or [+10.593%; +12.281%]