slick carousel - hide controls?

Add prevArrow: false and nextArrow: false to where you call your carousel. Ex)

$('.slider').slick({
    dots: false,
    prevArrow: false,
    nextArrow: false
});

I added dots: false in case you wanted to remove that too.

if you want to get rid of both arrows:

$('.slider').slick({
   arrows: false
});