[REF] remove as a return Param of getHierContactDetails

[REF] remove  as a return Param of getHierContactDetails

In trying to get to the bottom of BAO_CustomQuery I hit confusion about whether options should still exist.

This removes it from the return values of getHierContactDetails, making for a cleaner later PR when
we can check all calls to CRM_Contact_BAO_Query::apiQuery use the 'list' construct and only
use one param - at which point we can pull it out of apiQuery