Update test_sorting.py
- [ ] closes #xxxx
- [ ] tests added / passed
- [ ] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them
- [ ] whatsnew entry

Please don't do this @jreback, can @DeepakPareta be blocked from pandas please? It's the third time in 24h that they submit this https://github.com/pandas-dev/pandas/pulls?q=is%3Apr+author%3ADeepakPareta+is%3Aclosed @MarcoGorelli done