chore: Remove further unused

internal/discovery/discovery_test.go

@@ -1,14 +1,14 @@
 /*
-Copyright 2023 The Kubernetes Authors All rights reserved.
-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.
+	Copyright 2023 The Kubernetes Authors All rights reserved.
+	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.
 */
 
 package discovery
@@ -26,7 +26,6 @@ func TestGVKMapsResolveGVK(t *testing.T) {
 		desc    string
 		gvkmaps *CRDiscoverer
 		gvk     schema.GroupVersionKind
-		got     []groupVersionKindPlural
 		want    []groupVersionKindPlural
 	}
 	testcases := []testcase{

internal/store/networkpolicy_test.go

@@ -29,10 +29,6 @@ func TestNetworkPolicyStore(t *testing.T) {
 	startTime := 1501569018
 	metav1StartTime := metav1.Unix(int64(startTime), 0)
 
-	const metadata = `
-		# HELP kube_verticalpodautoscaler_labels Kubernetes labels converted to Prometheus labels.
-		# TYPE kube_verticalpodautoscaler_labels gauge
-		`
 	cases := []generateMetricsTestCase{
 		{
 			Obj: &networkingv1.NetworkPolicy{

pkg/metrics_store/metrics_store_test.go

@@ -29,17 +29,6 @@ import (
 	"k8s.io/kube-state-metrics/v2/pkg/metric"
 )
 
-// Mock metricFamily instead of importing /pkg/metric to prevent cyclic
-// dependency.
-type metricFamily struct {
-	value []byte
-}
-
-// Implement FamilyByteSlicer interface.
-func (f *metricFamily) ByteSlice() []byte {
-	return f.value
-}
-
 func TestObjectsSameNameDifferentNamespaces(t *testing.T) {
 	serviceIDs := []string{"a", "b"}