Remove reference to nonexistent location group filter callback function.
Copy locations for filters are loaded inline. No callback needed.
Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Mike Rylander <mrylander@gmail.com>
__PACKAGE__->add_search_filter( 'create_date' );
__PACKAGE__->add_search_filter( 'statuses' );
__PACKAGE__->add_search_filter( 'locations' );
-__PACKAGE__->add_search_filter( 'location_groups', sub { return __PACKAGE__->location_groups_callback(@_) } );
+__PACKAGE__->add_search_filter( 'location_groups' );
__PACKAGE__->add_search_filter( 'bib_source' );
__PACKAGE__->add_search_filter( 'site' );
__PACKAGE__->add_search_filter( 'pref_ou' );