[client-connection] remove the _srv_cnx usage
It does not do anything special now that we use explicite Connection object with
automatic cnx_set handling.
#! /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