[issue41730] Show deprecation warnings for tkinter.tix

[wyz23x2]

wyz23x2 <wyz23x2 at 163.com> added the comment:

When this issue was submitted on September 5, 2020, Python 3.9 was still in beta/rc stages. Now 242 days have passed and the developing of 3.11 has started.  :)

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41730>
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