[web/test] drop proff of concept Facebook login in test
The authentication stack will change. The change in API will requires rework of
user cube anyway.
#! /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