[issue39553] Delete HAVE_SXS protected code

[Zackery Spytz]

Change by Zackery Spytz <zspytz at gmail.com>:


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keywords: +patch
pull_requests: +17731
stage: needs patch -> patch review
pull_request: https://github.com/python/cpython/pull/18356

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39553>
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