When overridden in a derived class, stops listening on the provided source for the event being managed.
Assembly: WindowsBase (in WindowsBase.dll)
implementations should remove the class handler as added by the StartListening method. Removing a listener should not clear the listener list. Instead, it should only disconnect the class handler (perhaps temporarily). Other methods are available for clearing the entire list, such as the Purge method with the purgeAll parameter set to true.