astropy.samp was deprecated in v8.0.0 (#19373). When astropy main branch is tagged for v10.0.dev (at the earliest), this whole subpackage and its docs can be removed (unless you prefer to keep the doc landing page to redirect people to pyvo, we can also do that).

Other maintainer housekeeping items:

• Retire the samp issue label.
• Update GHA labeler rule to not use that label anymore.
• Astropy Team page should have been updated by now, but if not, then do that too. Remove SAMP maintenance from Astropy Team astropy.github.com#716
• What else did I forget?