[issue36528] Remove duplicate tests in Lib/tests/re_tests.py

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan <tir.karthi at gmail.com>:


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components: +Regular Expressions
nosy: +ezio.melotti, mrabarnett

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36528>
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