diff --git a/hack/.staticcheck_failures b/hack/.staticcheck_failures
index 040e361bac6..876567e3b7f 100644
--- a/hack/.staticcheck_failures
+++ b/hack/.staticcheck_failures
@@ -13,7 +13,6 @@ test/integration/ttlcontroller
 vendor/k8s.io/apimachinery/pkg/api/apitesting/roundtrip
 vendor/k8s.io/apimachinery/pkg/api/meta
 vendor/k8s.io/apimachinery/pkg/apis/meta/v1/validation
-vendor/k8s.io/apimachinery/pkg/conversion
 vendor/k8s.io/apimachinery/pkg/runtime
 vendor/k8s.io/apimachinery/pkg/runtime/serializer/json
 vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning
diff --git a/staging/src/k8s.io/apimachinery/pkg/conversion/BUILD b/staging/src/k8s.io/apimachinery/pkg/conversion/BUILD
index 3b6c8296bb7..4d6ec9dd271 100644
--- a/staging/src/k8s.io/apimachinery/pkg/conversion/BUILD
+++ b/staging/src/k8s.io/apimachinery/pkg/conversion/BUILD
@@ -13,7 +13,6 @@ go_test(
         "helper_test.go",
     ],
     embed = [":go_default_library"],
-    deps = ["//vendor/github.com/spf13/pflag:go_default_library"],
 )
 
 go_library(
diff --git a/staging/src/k8s.io/apimachinery/pkg/conversion/converter.go b/staging/src/k8s.io/apimachinery/pkg/conversion/converter.go
index 838d5b0aac8..d9b2a7ef9d0 100644
--- a/staging/src/k8s.io/apimachinery/pkg/conversion/converter.go
+++ b/staging/src/k8s.io/apimachinery/pkg/conversion/converter.go
@@ -303,37 +303,6 @@ func (s *scope) errorf(message string, args ...interface{}) error {
 	return fmt.Errorf(where+message, args...)
 }
 
-// Verifies whether a conversion function has a correct signature.
-func verifyConversionFunctionSignature(ft reflect.Type) error {
-	if ft.Kind() != reflect.Func {
-		return fmt.Errorf("expected func, got: %v", ft)
-	}
-	if ft.NumIn() != 3 {
-		return fmt.Errorf("expected three 'in' params, got: %v", ft)
-	}
-	if ft.NumOut() != 1 {
-		return fmt.Errorf("expected one 'out' param, got: %v", ft)
-	}
-	if ft.In(0).Kind() != reflect.Ptr {
-		return fmt.Errorf("expected pointer arg for 'in' param 0, got: %v", ft)
-	}
-	if ft.In(1).Kind() != reflect.Ptr {
-		return fmt.Errorf("expected pointer arg for 'in' param 1, got: %v", ft)
-	}
-	scopeType := Scope(nil)
-	if e, a := reflect.TypeOf(&scopeType).Elem(), ft.In(2); e != a {
-		return fmt.Errorf("expected '%v' arg for 'in' param 2, got '%v' (%v)", e, a, ft)
-	}
-	var forErrorType error
-	// This convolution is necessary, otherwise TypeOf picks up on the fact
-	// that forErrorType is nil.
-	errorType := reflect.TypeOf(&forErrorType).Elem()
-	if ft.Out(0) != errorType {
-		return fmt.Errorf("expected error return, got: %v", ft)
-	}
-	return nil
-}
-
 // RegisterUntypedConversionFunc registers a function that converts between a and b by passing objects of those
 // types to the provided function. The function *must* accept objects of a and b - this machinery will not enforce
 // any other guarantee.
@@ -636,10 +605,6 @@ type kvValue interface {
 
 type stringMapAdaptor reflect.Value
 
-func (a stringMapAdaptor) len() int {
-	return reflect.Value(a).Len()
-}
-
 func (a stringMapAdaptor) keys() []string {
 	v := reflect.Value(a)
 	keys := make([]string, v.Len())
@@ -669,11 +634,6 @@ func (a stringMapAdaptor) confirmSet(key string, v reflect.Value) bool {
 
 type structAdaptor reflect.Value
 
-func (a structAdaptor) len() int {
-	v := reflect.Value(a)
-	return v.Type().NumField()
-}
-
 func (a structAdaptor) keys() []string {
 	v := reflect.Value(a)
 	t := v.Type()
diff --git a/staging/src/k8s.io/apimachinery/pkg/conversion/converter_test.go b/staging/src/k8s.io/apimachinery/pkg/conversion/converter_test.go
index 21ec5f32ae7..eef51e88342 100644
--- a/staging/src/k8s.io/apimachinery/pkg/conversion/converter_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/conversion/converter_test.go
@@ -21,12 +21,8 @@ import (
 	"reflect"
 	"strconv"
 	"testing"
-
-	flag "github.com/spf13/pflag"
 )
 
-var fuzzIters = flag.Int("fuzz-iters", 50, "How many fuzzing iterations to do.")
-
 func testLogger(t *testing.T) DebugLogger {
 	// We don't set logger to eliminate rubbish logs in tests.
 	// If you want to switch it, simply switch it to: "return t"