Remove all functions with ST_ equivalents from core postgis.sql
Anything that we have said is deprecated (you know all those things with deprecated in 1.2 etc. that Paul has been still using because he's too lazy to type a few extra characters) that we don't even have documented anymore that has an ST_ equivalent shall be removed from the standard install.
For old applications that still require them, we will have a postgis_legacy.sql file with them in it.
If objections, speak now or forever hold your peace.