Neither can we delete any one of these requirements. It was a direct command from God, we dare not change it. If you want to do that, kindly do it on your own page. The reason a person is immersed in water is to put on Christ according to Gal. If we put on Christ at our immersion, then we can not put on Christ unless we are immersed.
Faith involves knowledge, trust and action.
Repentance indicates a change of heart and mind. Confession is done with the mouth and immersion in is water for the forgiveness of sins. None of these can be ignored. I think the text made that clear, but do not have it to refer to. It is a sadly unBiblical message, I believe.