cleaning my code

app.py

@@ -81,30 +81,6 @@ avatar_img = "images/UH.png"        # Avatar shown beside bot messages
 logo = "images/UH Crest.png"        # Crest image
 
 # # === Chat Logic with Course Memory ===
-# def chat_with_bot(message, history, course_state):
-#     lower_msg = message.lower()
-
-#     if "msc" in lower_msg or "course:" in lower_msg:
-#         course_state = message.strip()
-#         response = f"✅ Got it! You're now asking about: **{course_state}**"
-#     elif "change course to" in lower_msg:
-#         course_state = message.replace("change course to", "").strip()
-#         response = f"🔁 Course changed. Now answering based on: **{course_state}**"
-#     elif course_state:
-#         full_query = f"For the course '{course_state}': {message}"
-#         raw_output = qa_chain.run(full_query)
-#         response = raw_output.split("Answer:")[-1].strip()
-
-#         # Clean LLM artifacts
-#         response = response.replace("<|assistant|>", "").strip()
-#     else:
-#         response = "⚠️ Please first mention the course you're asking about (e.g., 'MSc Data Science')."
-
-#     history.append((message, response))
-#     return "", history, course_state
-
-
-
 def chat_with_bot(message, history, course_state):
     lower_msg = message.lower()