[Python-mode] paren-deactivate

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    Andreas> with my Emacsen corresponding parentheses are highlighted also
    Andreas> in python-mode, which doesn't seem of much use there.

I rely on it all the time.  Complex if expressions, nested function calls,
mixing dicts, lists, tuples.  All provide ample opportunity to screw up
paren balancing.  The visual feedback is quite useful, at least to me.

My preference would be to leave it as-is.

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