Remove obsolete `util` package

This code is now available in upstream controller-runtime.

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

internal/util/object.go

@@ -1,62 +0,0 @@
-/*
-Copyright 2023 The Flux authors
-Copyright 2018 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// TODO: Remove this when
-// https://github.com/kubernetes-sigs/controller-runtime/blob/c783d2527a7da76332a2d8d563a6ca0b80c12122/pkg/client/apiutil/apimachinery.go#L76-L104
-// is included in a semver release.
-
-package util
-
-import (
-	"errors"
-	"fmt"
-
-	apimeta "k8s.io/apimachinery/pkg/api/meta"
-	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/runtime/schema"
-	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
-)
-
-// IsAPINamespaced returns true if the object is namespace scoped.
-// For unstructured objects the gvk is found from the object itself.
-func IsAPINamespaced(obj runtime.Object, scheme *runtime.Scheme, restmapper apimeta.RESTMapper) (bool, error) {
-	gvk, err := apiutil.GVKForObject(obj, scheme)
-	if err != nil {
-		return false, err
-	}
-	return IsAPINamespacedWithGVK(gvk, restmapper)
-}
-
-// IsAPINamespacedWithGVK returns true if the object having the provided
-// GVK is namespace scoped.
-func IsAPINamespacedWithGVK(gk schema.GroupVersionKind, restmapper apimeta.RESTMapper) (bool, error) {
-	restmapping, err := restmapper.RESTMapping(schema.GroupKind{Group: gk.Group, Kind: gk.Kind})
-	if err != nil {
-		return false, fmt.Errorf("failed to get restmapping: %w", err)
-	}
-
-	scope := restmapping.Scope.Name()
-
-	if scope == "" {
-		return false, errors.New("scope cannot be identified, empty scope returned")
-	}
-
-	if scope != apimeta.RESTScopeNameRoot {
-		return true, nil
-	}
-	return false, nil
-}