[issue32793] smtplib: duplicated debug message

[Zackery Spytz]

Change by Zackery Spytz <zspytz at gmail.com>:


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nosy: +ZackerySpytz
type:  -> behavior
versions: +Python 3.9 -Python 3.6

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32793>
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