Removing event handlers

To remove event handlers, call TraceEvent() with these commands:

_NTO_TRACE_DELCLASSEVHANDLER
Remove the function for the given class and event type:
TraceEvent(_NTO_TRACE_DELCLASSEVHANDLER, class);
  
_NTO_TRACE_DELEVENTHANDLER
Remove the function for the given class and event type:
TraceEvent(_NTO_TRACE_DELEVENTHANDLER, class, event);