ipa-client-samba: remove and restore smb.conf only on first uninstall
Fixes: https://pagure.io/freeipa/issue/8019
Signed-off-by: François Cami <fcami@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Sergey Orlov <sorlov@redhat.com>