directory-scimple outputs warnings like "line 1:0 missing 'tel:' at '1'" #1246

Hi,

during SCIM synchronisations, scimple outputs warnings like line 1:0 missing 'tel:' at '1'. It's a bit spammy and not very helpful. Such warnings should probably not be output, and/or possibly the common recoverable cases triggering this should probably be recovered.

This can be seen when running tests as well.