Drop client-go cloud auth

cmd/kubectl/kubectl.go

@@ -20,9 +20,6 @@ import (
 	"k8s.io/component-base/cli"
 	"k8s.io/kubectl/pkg/cmd"
 	"k8s.io/kubectl/pkg/cmd/util"
-
-	// Import to initialize client auth plugins.
-	_ "k8s.io/client-go/plugin/pkg/client/auth"
 )
 
 func main() {

pkg/kubeapiserver/authenticator/config.go

@@ -47,8 +47,6 @@ import (
 	"k8s.io/kube-openapi/pkg/spec3"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 
-	// Initialize all known client auth plugins.
-	_ "k8s.io/client-go/plugin/pkg/client/auth"
 	"k8s.io/client-go/util/keyutil"
 	"k8s.io/kubernetes/pkg/serviceaccount"
 )