[docs] [issue38413] Remove or change "Multithreading" section

Jan. 6, 2021


      Change by Vladimir Ryabtsev <greatvovan@gmail.com>:


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stage: patch review -> resolved
status: open -> closed
versions: +Python 3.10 -Python 3.7

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Python tracker <report@bugs.python.org>
<https://bugs.python.org/issue38413>
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