Delete HandlerNotFound exception (from bfxapi.websocket.exceptions).

bfxapi/websocket/handlers/authenticated_events_handler.py

@@ -1,5 +1,3 @@
-from ..exceptions import HandlerNotFound
-
 from ...types import serializers
 
 from ...types.serializers import _Notification
@@ -60,8 +58,6 @@ class AuthenticatedEventsHandler:
 
                 return self.event_emitter.emit(event, serializer.parse(*stream))
 
-        raise HandlerNotFound(f"No handler found for event of type <{abbrevation}>.")
-
     def __notification(self, stream):
         event, serializer = "notification", _Notification(serializer=None)