Merge pull request #45873 from YuPengZTE/devValidateUpdate

Automatic merge from submit-queue

delete the code after "return"

Signed-off-by: yupengzte <yu.peng36@zte.com.cn>



**What this PR does / why we need it**:
After return, the code is unreachable, delete it.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
```

staging/src/k8s.io/kube-apiextensions-server/pkg/registry/customresource/strategy.go

@@ -81,8 +81,6 @@ func (CustomResourceDefinitionStorageStrategy) ValidateUpdate(ctx genericapirequ
 	}
 
 	return validation.ValidateObjectMetaAccessorUpdate(objAccessor, oldAccessor, field.NewPath("metadata"))
-
-	return field.ErrorList{}
 }
 
 func (a CustomResourceDefinitionStorageStrategy) GetAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {