To delete an attribute associated with an FNS named object, use the -d option.
fnattr -d name [[-O | -U] identifier value1 [value2+]]]
You can control what to delete:
Name only. If only the composite name is specified and no attribute identifier is specified, all the attributes associated with the named object are removed.
Name and identifier only. If only the composite name and an attribute identifier is specified, but no attribute values are specified, the entire attribute identified by identifier is removed.
Name, identifier, and values. If the composite name, an attribute identifier, and one or more attribute values are specified, then only those values are removed from the attribute. (Removal of the last remaining value of an attribute is the same as removing the attribute itself.)
For example, to delete all the attributes associated with thisorgunit/service/printer.
# fnattr -d thisorgunit/service/printer