Use the REMOVE directive to remove value(s) from a
 characteristic attribute.

 You can use the REMOVE directive on all Subordinate
 Reference characteristic attributes.

 Syntax:

 REMOVE DSA SUBORDINATE REFERENCE <name> <attr> {<value>,...}

 where <name> is the identifier of a Subordinate Reference entity,
 <attr> is the name of the characteristic attribute and <value> is
 the value you want to remove from the attribute.