Remove Page Builder

So,

I client downloaded and installed a theme which installed YOUR page build (which I will not use) It is NOT installed as a plugin BUT shows up in the WordPress menu

There is a moist annoying message that says:
“Hola! Would you like to receive automatic updates and unlock premium support? Please activate your copy of Visual Composer.”

I can’t tell you how much much I had people who have to NAG users (I pay for all the shit I use) It’s more frustrating that I CAN NOT REMOVE IT.

So that being said – HOW DO I REMOVE YOUR SOFTWARE??????????????