Although this is standard in JS consoles (ex, in web browsers), I don't see much benefit to it being shown on the Espruino, since you know it did something, since it's showing the > - I think you can go ahead and remove it.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Although this is standard in JS consoles (ex, in web browsers), I don't see much benefit to it being shown on the Espruino, since you know it did something, since it's showing the > - I think you can go ahead and remove it.