Improve log output for delete cluster (#2934)

* Improve log output for delete cluster

* Revert logging removal of context from kubeconfig

pkg/cluster/internal/delete/delete.go

@@ -38,12 +38,17 @@ func Cluster(logger log.Logger, p providers.Provider, name, explicitKubeconfigPa
 		logger.Errorf("failed to update kubeconfig: %v", kerr)
 	}
 
-	err = p.DeleteNodes(n)
-	if err != nil {
-		return err
+	if len(n) > 0 {
+		err = p.DeleteNodes(n)
+		if err != nil {
+			return err
+		}
+		logger.V(0).Infof("Deleted nodes: %q", n)
 	}
+
 	if kerr != nil {
-		return err
+		return kerr
 	}
+
 	return nil
 }