remove obsolete error

Author: ValentinGerlach

internal/controller/kubeconfigs.go

@@ -2,7 +2,6 @@ package controller
 
 import (
 	"context"
-	"errors"
 	"time"
 
 	corev1 "k8s.io/api/core/v1"
@@ -21,10 +20,6 @@ const (
 	keyExpiration = "expiresAt"
 )
 
-var (
-	errInvalidExpirationOrBuffer = errors.New("desired expiration and buffer are incompatible. make sure that desired expiration is greater than the buffer")
-)
-
 func (r *ControlPlaneReconciler) ensureKubeconfig(ctx context.Context, remoteCfg *rest.Config, namespace string, secretName string, svcaccountRef corev1beta1.ServiceAccountReference) (*corev1.SecretReference, error) {
 	secret := &corev1.Secret{
 		ObjectMeta: metav1.ObjectMeta{