test/cql-pytest: remove "xfail" label on a reproducer for a fixed bug
test/cql-pytest: remove "xfail" label on a reproducer for a fixed bug

The two cql-pytest tests:
        test_frozen_collection.py::test_wrong_set_order_in_nested
        test_frozen_collection.py::test_wrong_set_order_in_nested_2

Which used to fail, and therefore marked "xfail", got fixed by commit
5589f348e7cef9067669ef30c7c3cd0b9889cf41 ("cql3: expr: Implement
evaluate(expr::bind_variable). That commit made the handling of bound
variables in prepared statements more rigorous, and in particular
made sure that sets are re-sorted not only if they are at the top
level of the value (as happened in the old code), but also if they
are nested inside some other container. This explains the surprising
fact that we could only reproduce bug with prepared statements, and
only with nested sets - while top-level sets worked correctly.

As the tests no longer failed and the bug tested by them really did
get fixed, in this patch we remove the "xfail" marker from these
tests.

Closes #7856. This issue was really fixed by the aforementioned commit,
but let's close it now.

Signed-off-by: Nadav Har'El <625169824b719df98706d88646d0aae6f368ae4d@scylladb.com>
Message-Id: <20211029221731.1113554-1-625169824b719df98706d88646d0aae6f368ae4d@scylladb.com>

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