code: func (c *AggregationController) RemoveAPIService(apiServiceName string) {
  	if err := c.openAPIAggregationManager.RemoveAPIServiceSpec(apiServiceName); err != nil {
  		utilruntime.HandleError(fmt.Errorf("removing %q from AggregationController failed with: %v", apiServiceName, err))
  	}
  	// This will only remove it if it was failing before. If it was successful, processNextWorkItem will figure it out
  	// and will not add it again to the queue.
  	c.queue.Forget(apiServiceName)
  }
docs: // RemoveAPIService removes API Service from OpenAPI Aggregation Controller.