Update agent.py

agent.py

@@ -73,7 +73,7 @@ def build_agent():
 
     def call_model(state: MessagesState):
         """Call the LLM with the given state."""
-        messages = [system_prompt] + state["messages"]
+        messages = state["messages"]
         response = llm.invoke(messages)
         return {"messages" : response}