unstructured

ddbe90f6 - rfctr(html): clean html tests in prep for PRs to follow (#3156)

rfctr(html): clean html tests in prep for PRs to follow (#3156) **Summary** Clean `tests_unstructured/partition/test_html.py` in preparation for broader refactor of HTML partitioner to follow. That refactor will address a cluster of bugs. Temporarily remove blank lines in tests so reordering tests in following commit is easier to follow. Those will go back in after that.