[issue41103] Removing old buffer support

[Inada Naoki]

New submission from Inada Naoki <songofacandy at gmail.com>:

https://docs.python.org/3/c-api/objbuffer.html
Old buffer protocol has been deprecated since Python 3.0.
It was useful to make transition from Python 2 easy.
But it's time to remove.

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components: C API
messages: 372251
nosy: inada.naoki
priority: normal
severity: normal
status: open
title: Removing old buffer support
versions: Python 3.10

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41103>
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