DailyTransport: remove deprecated note and double registration

src/pipecat/transports/daily/transport.py

@@ -1974,9 +1974,6 @@ class DailyTransport(BaseTransport):
         self._register_event_handler("on_recording_stopped")
         self._register_event_handler("on_recording_error")
         self._register_event_handler("on_before_leave", sync=True)
-        # Deprecated
-        self._register_event_handler("on_joined")
-        self._register_event_handler("on_left")
 
     #
     # BaseTransport

src/pipecat/utils/base_object.py

@@ -139,7 +139,7 @@ class BaseObject(ABC):
                 name=event_name, handlers=[], is_sync=sync
             )
         else:
-            logger.warning(f"Event handler {event_name} not registered")
+            logger.warning(f"Event handler {event_name} already registered")
 
     async def _call_event_handler(self, event_name: str, *args, **kwargs):
         """Call all registered handlers for the specified event.