remove serialization hack after bump

kyaml/yaml/serialization.go

@@ -1,46 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package yaml
-
-import "sigs.k8s.io/kustomize/kyaml/internal/forked/github.com/go-yaml/yaml"
-
-func DoSerializationHacksOnNodes(nodes []*RNode) {
-	for _, node := range nodes {
-		DoSerializationHacks(node.YNode())
-	}
-}
-
-// DoSerializationHacks addresses a bug in yaml V3 upstream, it parses the yaml node,
-// and rearranges the head comments of the children of sequence node.
-// Refer to https://github.com/go-yaml/yaml/issues/587 for more details
-func DoSerializationHacks(node *yaml.Node) {
-	switch node.Kind {
-	case DocumentNode:
-		for _, node := range node.Content {
-			DoSerializationHacks(node)
-		}
-
-	case MappingNode:
-		for _, node := range node.Content {
-			DoSerializationHacks(node)
-		}
-
-	case SequenceNode:
-		for _, node := range node.Content {
-			// for each child mapping node, transfer the head comment of it's
-			// first child scalar node to the head comment of itself
-			// This is necessary to address serialization issue
-			// https://github.com/go-yaml/yaml/issues/587 in go-yaml.v3
-			// Remove this hack when the issue has been resolved
-			if len(node.Content) > 0 && node.Content[0].Kind == ScalarNode {
-				// Don't clobber the head comment if it's not empty.
-				if node.HeadComment == "" && node.Content[0].HeadComment != "" {
-					node.HeadComment = node.Content[0].HeadComment
-				}
-				node.Content[0].HeadComment = ""
-			}
-			DoSerializationHacks(node)
-		}
-	}
-}