fix staticcheck for k8s.io/apiserver/pkg/endpoints

staging/src/k8s.io/apiserver/pkg/endpoints/filters/audit_test.go

@@ -697,7 +697,7 @@ func TestAudit(t *testing.T) {
 			expectedID := types.UID("")
 			for i, expect := range test.expected {
 				event := events[i]
-				if "admin" != event.User.Username {
+				if event.User.Username != "admin" {
 					t.Errorf("Unexpected username: %s", event.User.Username)
 				}
 				if event.Stage != expect.Stage {

staging/src/k8s.io/apiserver/pkg/endpoints/filters/request_deadline.go

@@ -69,7 +69,7 @@ func withRequestDeadline(handler http.Handler, sink audit.Sink, policy policy.Ch
 
 		userSpecifiedTimeout, ok, err := parseTimeout(req)
 		if err != nil {
-			statusErr := apierrors.NewBadRequest(fmt.Sprintf("%s", err.Error()))
+			statusErr := apierrors.NewBadRequest(err.Error())
 
 			klog.Errorf("Error - %s: %#v", err.Error(), req.RequestURI)
 

staging/src/k8s.io/apiserver/pkg/endpoints/metrics/metrics.go

@@ -22,7 +22,6 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"regexp"
 	"strconv"
 	"strings"
 	"sync"
@@ -217,8 +216,6 @@ var (
 		[]string{"verb", "group", "version", "resource", "subresource", "scope"},
 	)
 
-	kubectlExeRegexp = regexp.MustCompile(`^.*((?i:kubectl\.exe))`)
-
 	metrics = []resettableCollector{
 		deprecatedRequestGauge,
 		requestCounter,