cibuildwheel: remove useless pp* skip selector

[Polandia94]

What do these changes do?

Removes the dead pp* cibuildwheel skip selector. PyPy build groups have not been enabled by default since cibuildwheel 3.0, so the selector matches nothing and cibuildwheel only warns:

Invalid skip selector: 'pp*'. This selector matches a group that wasn't enabled.

Mirrors aio-libs/multidict#1283, removing it from both pyproject.toml and .github/workflows/ci-cd.yml (the workflow-level CIBW_SKIP env var would otherwise keep injecting the selector regardless of the pyproject.toml setting).

Are there changes in behavior for the user?

No. Only the wheel build pipeline configuration changes, not the published wheels.

Is it a substantial burden for the maintainers to support this?

No, it removes dead configuration rather than adding any.

Related issue number

Related to aio-libs/multidict#1283 (does not close it).

Checklist

• I think the code is well written
• Unit tests for the changes exist (N/A, CI-only configuration change)
• Documentation reflects the changes (N/A)
• If you provide code modification, please add yourself to CONTRIBUTORS.txt (N/A, no library code change)
• Add a new news fragment into the CHANGES/ folder

Agent run details (optional, for reviewers)

Verified: grepped the full working tree for pp* after the change (no matches left), and confirmed pyproject.toml (tomllib) and .github/workflows/ci-cd.yml (PyYAML) still parse. Did not run the full test suite or make doc-spelling in the environment this was drafted in, since network access there is restricted; please confirm CI is green before marking ready.

Drafted with Claude (Sonnet 5) in a Cowork session. Reviewed by @Polandia94

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.02%. Comparing base (529d66a) to head (0474463).
⚠️ Report is 2 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #13657   +/-   ##
=======================================
  Coverage   99.02%   99.02%           
=======================================
  Files         135      135           
  Lines       50845    50845           
  Branches     2674     2674           
=======================================
  Hits        50351    50351           
  Misses        370      370           
  Partials      124      124           

Flag	Coverage Δ
Autobahn	21.97% <ø> (ø)
CI-GHA	98.92% <ø> (ø)
OS-Linux	98.69% <ø> (ø)
OS-Windows	97.31% <ø> (ø)
OS-macOS	98.18% <ø> (ø)
Py-3.10	98.12% <ø> (ø)
Py-3.11	98.35% <ø> (ø)
Py-3.12	98.43% <ø> (ø)
Py-3.13	98.42% <ø> (ø)
Py-3.14	98.45% <ø> (ø)
Py-3.14t	97.82% <ø> (-0.01%)	⬇️
Py-pypy-3.11	97.38% <ø> (-0.03%)	⬇️
VM-macos	98.18% <ø> (ø)
VM-ubuntu	98.69% <ø> (ø)
VM-windows	97.31% <ø> (ø)
cython-coverage	83.15% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

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[greptile-apps]

Confidence Score: 5/5

Safe to merge; the wheel-build selector change preserves the tested effective build set.

No blocking failure remains.

T-Rex Logs

What T-Rex did

• Ran the cibuildwheel PyPy-skip comparison script against cibuildwheel 3.4.1 to validate the two skip-variant executions.
• Validated the output shows identical CPython-only IDs for x86_64 and aarch64, with PyPy identifiers: 0, and a clean exit (exit code 0).

_{Ran code and verified through T-Rex}

_{Reviews (5): Last reviewed commit: "Merge branch 'master' into remove-cibuil..." | Re-trigger Greptile}

[codspeed-hq]

Merging this PR will not alter performance

✅ 97 untouched benchmarks
⏩ 83 skipped benchmarks¹

---

_{Comparing Polandia94:remove-cibuildwheel-pp-skip (0474463) with master (529d66a)²}

Footnotes

1. 83 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on master (926062b) during the generation of this report, so 529d66a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Polandia94]

Confidence Score: 4/5

Not ready to merge until the spelling allowlist is restored to the repository-required sort order.

The only independent finding is a non-security P2 repository-rule violation, which maps to a score of 4.

Files Needing Attention: docs/spelling_wordlist.txt

Comments Outside Diff (1)

1. docs/spelling_wordlist.txt, line 276-280 (link)
   Spelling entries are unsorted
   pyproject appears before py, but the case-insensitive wordlist order requires it after pyflakes. Reorder these entries so the repository's sorting check does not reject or rewrite the file.
   Context Used: AGENTS.md (source)

Reviews (1): Last reviewed commit: "cibuildwheel: remove useless pp* skip se..." | Re-trigger Greptile

fixed

[Dreamsorcerer]

Not sure we need a change note for something that doesn't change anything, and certainly shouldn't be expanding the spelling list with filenames.

[Polandia94]

removed on 9674955. I will remove form the other PRs.

[patchback]

Backport to 3.15: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.15/847e80cf3e10062b8cdda615d8a771bf6a3c3368/pr-13657

Backported as #13668

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 3.14: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.14/847e80cf3e10062b8cdda615d8a771bf6a3c3368/pr-13657

Backported as #13669

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.