[Need Help] How to remove Building(Room list) ??

If I need to remove a company RoomList call "HQ Rooms" in the Building(Room list), (red frame below the picture)

1. How can I remove the "SRoom" without powershell?
2. Can I remove it in the Exchange admin center? (Search "Alias" and "Name", but can't find the result.)
3. Or it can remove from Outlook application with Room Finder?
Any help and advice will be appreciated!!