all: remove pkg/errors

dialect/gremlin/graph/edge.go

@@ -8,8 +8,6 @@ import (
 	"fmt"
 
 	"entgo.io/ent/dialect/gremlin/encoding/graphson"
-
-	"github.com/pkg/errors"
 )
 
 type (
@@ -58,7 +56,7 @@ func (e Edge) MarshalGraphson() ([]byte, error) {
 func (e *Edge) UnmarshalGraphson(data []byte) error {
 	var edge edge
 	if err := graphson.Unmarshal(data, &edge); err != nil {
-		return errors.Wrap(err, "unmarshaling edge")
+		return fmt.Errorf("unmarshaling edge: %w", err)
 	}
 
 	*e = NewEdge(

dialect/gremlin/graph/valuemap.go

@@ -5,10 +5,11 @@
 package graph
 
 import (
+	"errors"
+	"fmt"
 	"reflect"
 
 	"github.com/mitchellh/mapstructure"
-	"github.com/pkg/errors"
 )
 
 // ValueMap models a .valueMap() gremlin response.
@@ -47,10 +48,10 @@ func (m ValueMap) decode(v interface{}) error {
 
 	dec, err := mapstructure.NewDecoder(&cfg)
 	if err != nil {
-		return errors.Wrap(err, "creating structure decoder")
+		return fmt.Errorf("creating structure decoder: %w", err)
 	}
 	if err := dec.Decode(m); err != nil {
-		return errors.Wrap(err, "decoding value map")
+		return fmt.Errorf("decoding value map: %w", err)
 	}
 	return nil
 }