Update app.py

app.py

@@ -43,9 +43,6 @@ tools = [
     }
 ]
 
-# --- BIND THE TOOL TO THE MODEL ---
-model_with_tools = llm.bind_tools([create_graph])
-
 # --- LLM Templates ---
 # Enhanced base system message
 SYSTEM_MESSAGE = """You are EduBot, an expert multi-concept tutor designed to facilitate genuine learning and understanding. Your primary mission is to guide students through the learning process rather than providing direct answers to academic work.