cleanup: move the comment to its place

Kubernetes-commit: 64193630a7c5a4bcc81b612c424bb15c547d9bec

pkg/server/deprecated_insecure_serving.go

@@ -29,6 +29,8 @@ import (
 )
 
 // DeprecatedInsecureServingInfo is the main context object for the insecure http server.
+// HTTP does NOT include authentication or authorization.
+// You shouldn't be using this.  It makes sig-auth sad.
 type DeprecatedInsecureServingInfo struct {
 	// Listener is the secure server network listener.
 	Listener net.Listener