Merge pull request kubernetes#123184 from googs1025/delete_repeat_comments

typo: delete useless comments

Author: k8s-ci-robot

pkg/controller/garbagecollector/graph_builder.go

@@ -85,7 +85,7 @@ type GraphBuilder struct {
 	// dependencyGraphBuilder
 	monitors    monitors
 	monitorLock sync.RWMutex
-	// informersStarted is closed after after all of the controllers have been initialized and are running.
+	// informersStarted is closed after all of the controllers have been initialized and are running.
 	// After that it is safe to start them here, before that it is not.
 	informersStarted <-chan struct{}