John
If you've just removed the canister then you'll be left with a tube in the engine compartment. This goes down the tunnel where it will connect via a valve to the fuel tank. This is the tank breather. So all you need do is pop the end of the tube somewhere convenient. I lengthened it & put it into the oil catch tank.
Of course by all means do the mod if you wish, it is neater. I didn't do the mod until I rebuilt the car.
Mick