fix cluster labels patch format.

Signed-off-by: morvencao <[email protected]>

pkg/hub/addon/discovery_controller.go

@@ -143,15 +143,13 @@ func (c *addOnFeatureDiscoveryController) syncAddOn(ctx context.Context, cluster
 		key := fmt.Sprintf("%s%s", addOnFeaturePrefix, addOnName)
 		if _, exist := labels[key]; exist {
 			delete(labels, key)
-			labels[fmt.Sprintf("%s-", key)] = ""
 		}
 	case err != nil:
 		return err
 	case !addOn.DeletionTimestamp.IsZero():
 		key := fmt.Sprintf("%s%s", addOnFeaturePrefix, addOnName)
 		if _, exist := labels[key]; exist {
 			delete(labels, key)
-			labels[fmt.Sprintf("%s-", key)] = ""
 		}
 	default:
 		key := fmt.Sprintf("%s%s", addOnFeaturePrefix, addOn.Name)
@@ -219,7 +217,6 @@ func (c *addOnFeatureDiscoveryController) syncCluster(ctx context.Context, clust
 		if !addOn.DeletionTimestamp.IsZero() {
 			if _, exist := addOnLabels[key]; exist {
 				delete(addOnLabels, key)
-				addOnLabels[fmt.Sprintf("%s-", key)] = ""
 			}
 			continue
 		}
@@ -236,7 +233,6 @@ func (c *addOnFeatureDiscoveryController) syncCluster(ctx context.Context, clust
 
 		if _, ok := newAddonLabels[key]; !ok {
 			delete(addOnLabels, key)
-			addOnLabels[fmt.Sprintf("%s-", key)] = ""
 		}
 	}