[issue45173] Remove configparser deprecations

[Hugo van Kemenade]

Hugo van Kemenade <hugovk+python at gmail.com> added the comment:

Also, the LegacyInterpolation class is deprecated since Python 3.2 but with no DeprecationWarning.

A quick sampling of GitHub results shows only copies of CPython's configparser.py and test_configparser.py

https://github.com/search?l=Python&p=1&q=LegacyInterpolation+extension%3Apy+language%3APython+language%3APython&ref=advsearch&type=Code

No use found in the top 200 PyPI packages.

Is it safe to remove now, or should it raise DeprecationWarning for a couple of releases first?

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