[forms] Do not raise errors on composite required relation being deleted
The entity included in the composite will be deleted in such a case, so
the field is not required even when the cardinality is '1' or '+'.
Related to #8529868
#! /bin/sh -e
case "$1" in
remove)
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl stop || true
fi
;;
esac
#DEBHELPER#
exit 0