'Carb heat cold' is still one of my pre takeoff checks, even though I don't have carb heat, but it has disapeared from my downwind/approach checks.
However I am pretty sure it used to be cold for the approach, as was previously said to be able to expedite a full power missed approach .
Carb icing would any way have been checked for at some stage in the circuit or flight and any indication would probably nullify approaching with it cold.
Do Continental engines differ from Lycoming on the point of carb heat application?