I think the function you are looking for is:
createjs.Ticker.removeAllEventListeners(); // Note the function name
The second example should work, assuming you are not proxying the function to maintain scope. Ticker is an EventDispatcher, and inherits all the methods defined here: http://www.createjs.com/Docs/EaselJS/classes/EventDispatcher.html
The evt.remove()
is a great shortcut, if you don't have a reference to the function.
One important note: If you remove ALL event listeners from Ticker, you may inadvertedly stop Tween from working. Tween adds a listener when it is initialized. Your best option is the second option where you remove the listener entirely. If you still can't get it working, feel free to post some more code, and I will try and help out.
Cheers.