[issue35572] Logging module cleanup

[Ned Deily]

Change by Ned Deily <nad at python.org>:


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nosy: +vinay.sajip
versions:  -Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35572>
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