[issue27030] Remove deprecated re features

[Roundup Robot]

Roundup Robot added the comment:

New changeset 8ed3880e94e5 by Serhiy Storchaka in branch 'default':
Issue #27030: The re.LOCALE flag now can be used only with bytes patterns.
https://hg.python.org/cpython/rev/8ed3880e94e5

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<http://bugs.python.org/issue27030>
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