clean up error imports for storage pkg

Signed-off-by: James Sheppard <jgsheppa@protonmail.com>

pkg/storage/driver/cfgmaps.go

@@ -18,11 +18,11 @@ package driver // import "helm.sh/helm/v3/pkg/storage/driver"
 
 import (
 	"context"
+	"fmt"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/pkg/errors"
 	v1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -121,7 +121,7 @@ func (cfgmaps *ConfigMaps) Query(labels map[string]string) ([]*rspb.Release, err
 	ls := kblabels.Set{}
 	for k, v := range labels {
 		if errs := validation.IsValidLabelValue(v); len(errs) != 0 {
-			return nil, errors.Errorf("invalid label value: %q: %s", v, strings.Join(errs, "; "))
+			return nil, fmt.Errorf("invalid label value: %q: %s", v, strings.Join(errs, "; "))
 		}
 		ls[k] = v
 	}

pkg/storage/driver/secrets.go

@@ -18,6 +18,7 @@ package driver // import "helm.sh/helm/v3/pkg/storage/driver"
 
 import (
 	"context"
+	"fmt"
 	"strconv"
 	"strings"
 	"time"
@@ -113,7 +114,7 @@ func (secrets *Secrets) Query(labels map[string]string) ([]*rspb.Release, error)
 	ls := kblabels.Set{}
 	for k, v := range labels {
 		if errs := validation.IsValidLabelValue(v); len(errs) != 0 {
-			return nil, errors.Errorf("invalid label value: %q: %s", v, strings.Join(errs, "; "))
+			return nil, fmt.Errorf("invalid label value: %q: %s", v, strings.Join(errs, "; "))
 		}
 		ls[k] = v
 	}

pkg/storage/storage_test.go

@@ -17,12 +17,11 @@ limitations under the License.
 package storage // import "helm.sh/helm/v3/pkg/storage"
 
 import (
+	"errors"
 	"fmt"
 	"reflect"
 	"testing"
 
-	"github.com/pkg/errors"
-
 	rspb "helm.sh/helm/v3/pkg/release"
 	"helm.sh/helm/v3/pkg/storage/driver"
 )