Here are a few tips, because removing addon's is very annoying and it shouldn't need to be done.
- Rename your admincp directory, and change the location of it in your config.php
- Password protect your new admin directory with cPanel Folder Password Protection
- Do the same with your ModCP.
- You may also restrict IP addresses to your admincp or whatever, if they have static IP's
Just some tips, read that thread for more.