[issue7908] remove leftover macos9 support code

[Ronald Oussoren]

Ronald Oussoren <ronaldoussoren at mac.com> added the comment:

The reason I'd like a patch review is that it affects a lot of files and want a second pair of eyes to check that I haven't been too agressive.

The patch itself doesn't cause regressions in the unittests.

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<http://bugs.python.org/issue7908>
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