code: func (u *UnschedulablePodsMap) delete(pod *v1.Pod) {
  	podID := u.keyFunc(pod)
  	if _, exists := u.podInfoMap[podID]; exists && u.metricRecorder != nil {
  		u.metricRecorder.Dec()
  	}
  	delete(u.podInfoMap, podID)
  }
docs: // Delete deletes a pod from the unschedulable podInfoMap.