When landing, you turn carb heat off just after turning on final. So when applying full power on goaround, carb heat is already off.
If you do that with a C150 with a continental engine, on a warm day with high humidity, you're chances of having engine failure are extremely high! I'm a helicopter instructor, not f/w...but I have a share in a C150 and I know about it. We're had carb ice starting to form (ie lowered RPM) on the ground before takeoff and in the cruise...so we'd certainly get it in the descent if we followed that sort of advice. Apart from the fact I follow the POH, which doesn't recommend what you're saying. I gather carb heat in or out on final depends on type of aircraft, which makes a lot of sense.