Minimum version: Midgard 1.4 (Bifrost)
Deletes the attachment name to the record represented by the object. Only the owner of the record can delete an attachment to that record.
Returns true if successfull. Returns false on failure.
Method available for: article, element, event, event_member, group, host, member, page, pageelement, pagelink, person, preference, sitegroup, snippet, snippetdir, style and topic records.