Merge pull request #37350 from chentao1596/delete-meaningless-judgments

Automatic merge from submit-queue (batch tested with PRs 39280, 37350, 39389, 39390, 39313)

delete meaningless judgments

What this PR does / why we need it：
      Whether "err" is nil or not, "err" can be return, so the judgment "err !=nil " is unnecessary

pkg/kubelet/pod_workers.go

@@ -171,10 +171,7 @@ func (p *podWorkers) managePodLoop(podUpdates <-chan UpdatePodOptions) {
 				updateType:     update.UpdateType,
 			})
 			lastSyncTime = time.Now()
-			if err != nil {
-				return err
-			}
-			return nil
+			return err
 		}()
 		// notify the call-back function if the operation succeeded or not
 		if update.OnCompleteFunc != nil {