Merge pull request #63457 from fisherxu/mv

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Remove repeated code

**What this PR does / why we need it**:
Remove repeated code
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

pkg/kubeapiserver/authenticator/config.go

@@ -196,9 +196,6 @@ func (config AuthenticatorConfig) New() (authenticator.Request, *spec.SecurityDe
 		if config.Anonymous {
 			return anonymous.NewAuthenticator(), &securityDefinitions, nil
 		}
-	}
-
-	if len(authenticators) == 0 {
 		return nil, &securityDefinitions, nil
 	}