Remove deprecated code #2940

Job	Run time
third-party / Load tox environments	7s
stsci / Load tox environments	4s
astropy / Load tox environments	4s
asdf / Load tox environments	4s
astropy / asdf-astropy (ubuntu-latest)	2m 26s
astropy / specutils (ubuntu-latest)	1m 51s
asdf / asdf-wcs-schemas (ubuntu-latest)	1m 43s
asdf / asdf-coordinates-schemas (ubuntu-latest)	3m 22s
asdf / asdf-zarr (ubuntu-latest)	43s
asdf / asdf-compression (ubuntu-latest)	33s
stsci / astrocut (ubuntu-latest)	55s
stsci / gwcs (ubuntu-latest)	1m 4s
stsci / jwst (ubuntu-latest)	19m 3s
stsci / stdatamodels (ubuntu-latest)	1m 52s
stsci / stpipe (ubuntu-latest)	46s
stsci / roman_datamodels (ubuntu-latest)	1m 36s
third-party / weldx (ubuntu-latest)	1m 4s
third-party / sunpy (ubuntu-latest)	3m 14s
third-party / dkist (ubuntu-latest)	2m 30s
third-party / abacusutils (ubuntu-latest)	2m 57s
	45m 58s

Provide feedback