add sleeptime when delete cloudbrain task

routers/repo/cloudbrain.go

@@ -1251,6 +1251,7 @@ func DeleteJobsByRepoID(repoID int64) {
 		log.Warn("Failed to get cloudBrain info", err)
 		return
 	}
+	time.Sleep(time.Second * 120)
 	DeleteJobs(cloudBrains)
 }