Impossible. Electric golf carts do not have governors. They are only used on gas golf carts to limit how high the engine revs. On electric golf carts the speed is governed by things like the controller and motor.

A lot of the newer golf carts now come with what is called a regenerative "regen" breaking system which slows the cart down when riding on hills. If this feature is annoying to you I have good news, typically it can be modified. Each golf cart has its own different way of modifying it, so it can get lengthy. That is why I'm not going to get into that in this thread.

PEOPLE WITH GAS CARTS:
Please search our forums for more information on how to remove the governor on your gas golf cart. Each cart is different.