Remove duplicate mis-indented try/except block; fix runtime error

enhanced_rag_chatbot.py

@@ -60,21 +60,7 @@ class EnhancedRAGChatbot:
         
         # Conversation history
         self.conversation_history: List[Dict[str, str]] = []
-        
         print("✅ Enhanced RAG Chatbot with Groq ready!")
-    
-                    try:
-                        self.collection = self.client.get_collection("rackspace_knowledge")
-                    except Exception as e:
-                        print("❌ Vector DB or collection missing! Attempting to rebuild...")
-                        try:
-                            import subprocess
-                            subprocess.run(["python", "enhanced_vector_db.py"], check=True)
-                            self.collection = self.client.get_collection("rackspace_knowledge")
-                            print("✅ Vector DB rebuilt successfully!")
-                        except Exception as rebuild_e:
-                            print("❌ Failed to rebuild vector DB. Please run 'python enhanced_vector_db.py' manually.")
-                            self.collection = None
         """Retrieve relevant context with source information"""
         # Generate query embedding
         query_embedding = self.embedding_model.encode([query])[0]