remove unused return

Author: dlqqq

packages/jupyter-ai/jupyter_ai/personas/persona_awareness.py

@@ -82,4 +82,4 @@ def get_local_state(self) -> dict[str, Any]:
 
     def set_local_state_field(self, field: str, value: Any) -> None:
         with self.as_custom_client():
-            return self.awareness.set_local_state_field(field, value)
+            self.awareness.set_local_state_field(field, value)