[issue30270] Remove sqlite3.Cache display method

[Brett Cannon]

Brett Cannon added the comment:

How long has the method been there? And does it hurt anything for it to be exposed? Removing it at this point may break code if it predates Python 3.7.

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nosy: +brett.cannon

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30270>
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