I have a YOLOv11 model with two classes ['class_a','class_b'] that was trained to detect class_a and class_b with high confidence (around 90% accuracy). Now I want to create a variation of this model that only detects the class_b.

I have checked and I went over all the properties of the model but can't remove the class detection. The only way is retraining but still I have to retrain with a lot of epochs because if not metrics go super low.

Is it possible to remove one class from the detection without retraining?