congrats on getting your bike cleaned up.
Not so fast! The charcoal cannister has a function beyond collecting stray hydrocarbon gases and returning them to the motor in a controlled fashion. It also isolates the interior of the tank from the outside atmosphere, virtually preventing moisture from gaining entry, and even traps water vapor that may enter the tank, such as when refueling while it's raining.
Another point to consider is the vent in the cap of 49 state bikes actually releases gasoline fumes as the tank heats, so if you put your helmet on the tank for a couple minutes it collects these fumes, which can deteriorate the EPS shock absorbing foam interior, not to mention the ill effects of pulling on your helmet and breathing in the displaced fumes blowing across your face.
When the cannister and it's associated hoses and controls are removed, what did you do with the open hoses and fittings that may be left over? If all were plugged then the tank has no vent at all, a bad situation, and if the vent hose is left open, is it situated such that it will not collect water from washing or riding in the rain? The caps are different according to Ron Ayers parts lists, certainly meaning the Cal. model doesn't have the vent.
None of this held my interest up 'till now -- mine is a 49 state model, purchased used.