[docs] [issue22883] Get rid of references to PyInt in Py3 sources

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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assignee:  -> docs at python
components: +Documentation -Extension Modules, Interpreter Core
nosy: +docs at python

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22883>
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