[issue39553] Delete HAVE_SXS protected code

[Steve Dower]

New submission from Steve Dower <steve.dower at python.org>:

We no longer support SXS manifests, so rather than fixing issue37025 in master, let's just delete the code covered by HAVE_SXS completely.

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components: Windows
keywords: easy (C)
messages: 361393
nosy: ZackerySpytz, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
stage: needs patch
status: open
title: Delete HAVE_SXS protected code
type: enhancement
versions: Python 3.9

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