Python: revert spurious Py2 hidden-test rebless

The earlier rebless added '.hidden/inner' and 'folder' to the expected
output, but those are namespace-package folders without __init__.py, so
under Py2 mode (respect_init=True) they are correctly *not* extracted
as packages. The previous local rebless picked up Py3 behaviour because
python/ql/test/2/extractor-tests/options doesn't propagate --lang=2
(only library-tests and query-tests do). CI runs it under Py2 and
produces the smaller output.

This brings the expected file back in line with main and CI.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

python/ql/test/2/extractor-tests/hidden/test.expected

@@ -1,7 +1,5 @@
-| .hidden/inner |
 | .hidden/inner/test.py |
 | .hidden/module.py |
-| folder |
 | folder/module.py |
 | package |
 | package/__init__.py |