removeEventListener
fun <E : Event, C : EventTarget, T : EventTarget> C.removeEventListener( type: EventType<E>, handler: EventHandler<E, C, T>, options: AddEventListenerOptions? = undefined)(source)
fun <E : Event, C : EventTarget> C.removeEventListener( type: EventType<E>, handler: (E) -> Unit, options: AddEventListenerOptions? = undefined)(source)