fix: Remove authorization handling from ADK preview template

PiperOrigin-RevId: 926956686

Author: Tongzhou-Jiang

vertexai/preview/reasoning_engines/templates/adk.py

@@ -1060,7 +1060,6 @@ async def _invoke_agent_async():
             ):
                 self.set_up()
             # Try to get the session, if it doesn't exist, create a new one.
-            state_delta = None
             if request.session_id:
                 session_service = self._tmpl_attrs.get("session_service")
                 artifact_service = self._tmpl_attrs.get("artifact_service")
@@ -1078,11 +1077,6 @@ async def _invoke_agent_async():
                             artifact_service=artifact_service,
                             request=request,
                         )
-                        if request.authorizations:
-                            state_delta = {}
-                            for auth_id, auth in request.authorizations.items():
-                                auth = _Authorization(**auth)
-                                state_delta[auth_id] = auth.access_token
                 except ClientError:
                     pass
                 if not session:
@@ -1113,7 +1107,6 @@ async def _invoke_agent_async():
                     user_id=request.user_id,
                     session_id=session.id,
                     new_message=message_for_agent,
-                    state_delta=state_delta,
                 ):
                     converted_event = await self._convert_response_events(
                         user_id=request.user_id,