[server] drop support for antediluvian lgdb versions
That API was changed in 2010, before logilab-database was moved out of
logilab-common.
#! /bin/sh -e#if [ "$1" = configure ]; then if which install-docs >/dev/null 2>&1; then install-docs -i /usr/share/doc-base/cubicweb-doc fifi#DEBHELPER#exit 0