Update app.py

app.py

@@ -161,10 +161,6 @@ async def _load_rooms():
         # Default rooms
         app.state.rooms = [
             {"id": "main", "name": "General", "private": False},
-            {"id": "math101", "name": "Math 101", "private": True, "invite": "MATH-101-2024"},
-            {"id": "eng101", "name": "English 101", "private": True, "invite": "ENG-101-2024"},
-            {"id": "grade6", "name": "Grade 6", "private": True, "invite": "GRADE6-OK"},
-            {"id": "grade7", "name": "Grade 7", "private": True, "invite": "GRADE7-OK"}
         ]
         await _save_rooms()