All reports of maintainer-script-should-not-use-install-sgmlcatalog for the archive. The extended description of this tag is:
The maintainer script apparently runs install-sgmlcatalog. install-sgmlcatalog is deprecated and should only have been used in postinst or prerm to remove the entries from earlier packages. Given how long ago this transition was, consider removing it entirely.
This tag has not been emitted in any package tested by Lintian.