Removes all the callbacks added for a given event subscriber to a given event publisher.
Role:
This function makes the event subscriber resigns its subscription to all the callbacks
added for all the events published by a given event publisher.
Parameters:
iEventSubscriber
The event subscriber
iEventPublisher
The event publisher from which all the callbacks are to be removed.
This object is included in the file: CATEventSubscriber.h
If needed, your Imakefile.mk should include the module: JS0GROUP