[schema2sql] Drop most of the DB DROP related code
This code is dead for a while, it has been superseded by
`sql_drop_all_user_tables`.
Related to #14050899
#! /bin/sh -ecase "$1" in remove) if [ -x "/etc/init.d/cubicweb-ctl" ]; then invoke-rc.d cubicweb-ctl stop || true fi ;;esac#DEBHELPER#exit 0