Zorin 17 lite Menu Editor

Trying to remove an Item in the Internet menu, Chromium, put there by the Iron Browser which I have managed to remove. Opening the menu editor, highlight the offending entry in the editor and click delete but it says I dont have permission. So try to start menulibre from terminal sudo and it says it cant be run as root. So how do I edit the internet menu and get permission to delete the entry or is there another way?