I am looking at a web page which has overwritten the right-click button so to display its own popup HTML element.
This prevents me from using Chrome Developer Tools to
Tested in Chrome 60.0.3112.78.
Some of the above methods work, but the easiest in my opinion is:
Open dev tools (Shift+Control+i).
Select the "Elements" tab, and then the "Event Listeners" tab.
Hover over the elements/listener. A "Remove" button will show up.
Click "Remove".
E.g. see photo.