fix: remove debug code

cmd/config.yaml

@@ -31,5 +31,5 @@ policy:
 # the 'trigger.cron' empty
 trigger:
   # Cron expression to trigger the cleanup, for example "0 0 * * *", leave it empty will disable the
-  # trigger and fallback to run cleanup once.
+  # trigger and fallback to run cleanup once. Note: you may need to quote the cron expression with double quote
   cron:

pkg/trigger/cron.go

@@ -49,7 +49,6 @@ func (s *cronScheduler) Submit(task func()) {
 		}()
 
 		logrus.Info("Start to run cleanup task")
-		time.Sleep(time.Minute)
 		task()
 	})
 }