diff --git a/build/tools.go b/build/tools.go
index e9ac7cab55f..d3d25b00095 100644
--- a/build/tools.go
+++ b/build/tools.go
@@ -28,7 +28,6 @@ import (
 	_ "k8s.io/gengo/examples/deepcopy-gen/generators"
 	_ "k8s.io/gengo/examples/defaulter-gen/generators"
 	_ "k8s.io/gengo/examples/import-boss/generators"
-	_ "k8s.io/gengo/examples/set-gen/generators"
 	_ "k8s.io/kube-openapi/cmd/openapi-gen"
 
 	// submodule test dependencies
diff --git a/pkg/controlplane/controller/systemnamespaces/system_namespaces_controller_test.go b/pkg/controlplane/controller/systemnamespaces/system_namespaces_controller_test.go
index 8120930a81e..4bc3f051e42 100644
--- a/pkg/controlplane/controller/systemnamespaces/system_namespaces_controller_test.go
+++ b/pkg/controlplane/controller/systemnamespaces/system_namespaces_controller_test.go
@@ -26,7 +26,6 @@ import (
 	"k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes/fake"
 	k8stesting "k8s.io/client-go/testing"
-	"k8s.io/gengo/examples/set-gen/sets"
 )
 
 // Test_Controller validates the garbage collection logic for the apiserverleasegc controller.
@@ -124,13 +123,16 @@ func Test_Controller(t *testing.T) {
 				t.Errorf("unexpected error: %v", err)
 			}
 
-			got := sets.NewString()
+			got := map[string]bool{}
 			for _, ns := range namespaces {
-				got.Insert(ns.Name)
+				got[ns.Name] = true
 			}
 
-			if !got.HasAll(systemNamespaces...) {
-				t.Errorf("unexpected namespaces: %v", got.List())
+			for _, ns := range systemNamespaces {
+				if !got[ns] {
+					t.Errorf("unexpected namespaces: %v", namespaces)
+					break
+				}
 			}
 		})
 	}
diff --git a/staging/src/k8s.io/code-generator/cmd/prerelease-lifecycle-gen/prerelease-lifecycle-generators/status.go b/staging/src/k8s.io/code-generator/cmd/prerelease-lifecycle-gen/prerelease-lifecycle-generators/status.go
index 00c152581e5..ec3122db649 100644
--- a/staging/src/k8s.io/code-generator/cmd/prerelease-lifecycle-gen/prerelease-lifecycle-generators/status.go
+++ b/staging/src/k8s.io/code-generator/cmd/prerelease-lifecycle-gen/prerelease-lifecycle-generators/status.go
@@ -24,7 +24,6 @@ import (
 	"strings"
 
 	"k8s.io/gengo/args"
-	"k8s.io/gengo/examples/set-gen/sets"
 	"k8s.io/gengo/generator"
 	"k8s.io/gengo/namer"
 	"k8s.io/gengo/types"
@@ -187,11 +186,10 @@ func Packages(context *generator.Context, arguments *args.GeneratorArgs) generat
 		klog.Fatalf("Failed loading boilerplate: %v", err)
 	}
 
-	inputs := sets.NewString(context.Inputs...)
 	packages := generator.Packages{}
 	header := append([]byte(fmt.Sprintf("// +build !%s\n\n", arguments.GeneratedBuildTag)), boilerplate...)
 
-	for i := range inputs {
+	for _, i := range context.Inputs {
 		klog.V(5).Infof("Considering pkg %q", i)
 		pkg := context.Universe[i]
 		if pkg == nil {
diff --git a/staging/src/k8s.io/code-generator/cmd/set-gen/.gitignore b/staging/src/k8s.io/code-generator/cmd/set-gen/.gitignore
deleted file mode 100644
index ffe6458c963..00000000000
--- a/staging/src/k8s.io/code-generator/cmd/set-gen/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-set-gen
diff --git a/staging/src/k8s.io/code-generator/cmd/set-gen/main.go b/staging/src/k8s.io/code-generator/cmd/set-gen/main.go
deleted file mode 100644
index 0968ce762b9..00000000000
--- a/staging/src/k8s.io/code-generator/cmd/set-gen/main.go
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
-Copyright 2015 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.
-*/
-
-// set-gen is an example usage of gengo.
-//
-// Structs in the input directories with the below line in their comments will
-// have sets generated for them.
-// // +genset
-//
-// Any builtin type referenced anywhere in the input directories will have a
-// set generated for it.
-package main
-
-import (
-	"os"
-
-	"k8s.io/gengo/args"
-	"k8s.io/gengo/examples/set-gen/generators"
-
-	"k8s.io/klog/v2"
-)
-
-func main() {
-	klog.InitFlags(nil)
-	arguments := args.Default()
-
-	// Override defaults.
-	arguments.InputDirs = []string{"k8s.io/kubernetes/pkg/util/sets/types"}
-	arguments.OutputPackagePath = "k8s.io/apimachinery/pkg/util/sets"
-
-	if err := arguments.Execute(
-		generators.NameSystems(),
-		generators.DefaultNameSystem(),
-		generators.Packages,
-	); err != nil {
-		klog.Errorf("Error: %v", err)
-		os.Exit(1)
-	}
-	klog.V(2).Info("Completed successfully.")
-}
diff --git a/staging/src/k8s.io/code-generator/tools.go b/staging/src/k8s.io/code-generator/tools.go
index 90b942b0703..476bd3a9760 100644
--- a/staging/src/k8s.io/code-generator/tools.go
+++ b/staging/src/k8s.io/code-generator/tools.go
@@ -33,5 +33,4 @@ import (
 	_ "k8s.io/code-generator/cmd/lister-gen"
 	_ "k8s.io/code-generator/cmd/openapi-gen"
 	_ "k8s.io/code-generator/cmd/register-gen"
-	_ "k8s.io/code-generator/cmd/set-gen"
 )