CIBW: remove non-ABI3 code

[hombit]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.63%. Comparing base (2141cd2) to head (60753d9).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #377   +/-   ##
=======================================
  Coverage   82.63%   82.63%           
=======================================
  Files           9        9           
  Lines        2574     2574           
=======================================
  Hits         2127     2127           
  Misses        447      447           

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[codspeed-hq]

CodSpeed Performance Report

Merging #377 will not alter performance

_{Comparing ci-rm-non-abi3 (60753d9) with ci-rm-non-abi3 (238da8a)}

Summary

✅ 99 untouched benchmarks