[test] remove custom implementation of FakeRequest.header_accept_language() (closes #3375021) ``Accept-Language`` should be overridable just as any other request header. Default value is "nothing" since the application should be able the empty header case.

#! /bin/sh -e

if [ -x "/etc/init.d/cubicweb-ctl" ]; then
    invoke-rc.d cubicweb-ctl restart || true
fi
 
 
#DEBHELPER#
 
exit 0