How to remove ground pin on power cable

This is a power cable being used for my subwoofer. I have a ground loop currently. According to the manufacturer of my subwoofer, due to it's design, it is perfectly safe to remove the ground. Right now I do so with a cheater plug but I would like to avoid having to use it. The power cable in question is Oyaide Black Mamba V2

How easy is it to take a power cable apart and disconnect the ground? Is it best to do so at the IEC side or the pronged side? What is the process for doing this?

Thanks