[YUNIKORN-2879] [shim] yunikorn unschedulable pods pending forever

* task postfail or rejected reschedule

pkg/cache/task.go

@@ -693,34 +693,3 @@ func (task *Task) RetryThenFailTask(errorMessage, actionReason string) {
 		task.failWithEvent(errorMessage, actionReason)
 	}
 }
-func (task *Task) setRetryTimer(timeout time.Duration, currentState string, event RetryTaskEvent) {
-	log.Log(log.ShimContext).Debug("Task retry timer initiated",
-		zap.String("appID", task.applicationID),
-		zap.String("TaskID", task.taskID),
-		zap.String("state", task.sm.Current()),
-		zap.Duration("timeout", timeout))
-
-	task.retryTimer = time.AfterFunc(timeout, task.timeoutRetryTimer(currentState, event))
-}
-
-func (task *Task) timeoutRetryTimer(expectedState string, event RetryTaskEvent) func() {
-	return func() {
-		task.lock.Lock()
-		defer task.lock.Unlock()
-		if expectedState == task.sm.Current() {
-			dispatcher.Dispatch(event)
-		}
-
-	}
-}
-
-func (task *Task) RetryThenFailTask(errorMessage, actionReason string) {
-	if task.attempt < task.retryNum {
-		log.Log(log.ShimCacheTask).Info("task failed, task will retrying", zap.String("taskID", task.taskID), zap.Int("attempt", task.attempt), zap.Int("retryNum", task.retryNum), zap.Duration("retryTimeInterval", task.retryTimeInterval), zap.String("errorMessage", errorMessage))
-		task.attempt++
-		task.setRetryTimer(task.retryTimeInterval, task.sm.Current(), NewRetryTaskEvent(task.applicationID, task.taskID, "retrying task"))
-	} else {
-		log.Log(log.ShimCacheTask).Error("task failed ", zap.String("taskID", task.taskID), zap.String("errorMessage", errorMessage))
-		task.failWithEvent(errorMessage, actionReason)
-	}
-}