see if we can remove the rtd docsearch_disabled flag

[davidism]

When RTD was working on their new search feature, we disabled it because the results it returned weren't as useful as Sphinx's search yet.

pallets-sphinx-themes/src/pallets_sphinx_themes/themes/pocoo/layout.html

Lines 40 to 49 in 50414a1

	{%- if READTHEDOCS and not readthedocs_docsearch %}
	<script>
	if (typeof READTHEDOCS_DATA !== 'undefined') {
	if (!READTHEDOCS_DATA.features) {
	READTHEDOCS_DATA.features = {};
	}
	READTHEDOCS_DATA.features.docsearch_disabled = true;
	}
	</script>
	{%- endif %}

I think we can disable this now, we can play around with the setting in one of the projects and compare the results to see if RTD search is okay to use now.