[docs] [issue33071] Document that PyPI no longer requires 'register'

[Kojo Idrissa]

Change by Kojo Idrissa <kojo.idrissa at gmail.com>:


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keywords: +patch
pull_requests: +13001
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33071>
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