[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 [ "$1" = remove -o "$1" = upgrade ]; then
  if which install-docs >/dev/null 2>&1; then
    install-docs -r cubicweb-doc
  fi
fi

#DEBHELPER#

exit 0