cleanup docs deps and conf #587

Job	Run time
jwst unit tests	45m 19s
roman_datamodels unit tests	2m 36s
dkist unit tests	3m 30s
asdf-transform-schemas unit tests	1m 12s
asdf-coordinates-schemas unit tests	2m 22s
asdf-wcs-schemas unit tests	1m 15s
weldx unit tests	1m 18s
asdf unit tests	1m 12s
gwcs unit tests	1m 0s
sunpy unit tests	2m 30s
specutils unit tests	1m 41s
asdf-astropy unit tests	1m 42s
	1h 5m 37s

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