public unwatch(name:String) : Boolean
Removes a watchpoint that Object.watch() created. This method returns a value of true if the watchpoint is successfully removed, false otherwise.
name:String - A string; the name of the object property that should no longer be watched.
Boolean - A Boolean value: true if the watchpoint is successfully removed, false otherwise.
See the example for Object.watch().
watch (Object.watch method), addProperty (Object.addProperty method)