Remove TestData from series-tests test_api.py
Part of #22550

* Replaced TestData usage in `pandas/tests/series/test_api.py` with fixtures

- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`

Thanks @SaturnFromTitan very nice cleanup