remove unnecessary ID filtering logic

inmem/label_service.go

@@ -96,14 +96,6 @@ func (s *Service) FindLabelByID(ctx context.Context, id influxdb.ID) (*influxdb.
 
 // FindLabels will retrieve a list of labels from storage.
 func (s *Service) FindLabels(ctx context.Context, filter influxdb.LabelFilter, opt ...influxdb.FindOptions) ([]*influxdb.Label, error) {
-	if filter.ID.Valid() {
-		l, err := s.FindLabelByID(ctx, filter.ID)
-		if err != nil {
-			return nil, err
-		}
-		return []*influxdb.Label{l}, nil
-	}
-
 	filterFunc := func(label *influxdb.Label) bool {
 		return (filter.Name == "" || (filter.Name == label.Name))
 	}

label.go

@@ -104,7 +104,6 @@ type LabelUpdate struct {
 
 // LabelFilter represents a set of filters that restrict the returned results.
 type LabelFilter struct {
-	ID   ID
 	Name string
 }