in assets/js/slick.js [844:916]
    Slick.prototype.destroy = function(refresh) {
        var _ = this;
        _.autoPlayClear();
        _.touchObject = {};
        _.cleanUpEvents();
        $('.slick-cloned', _.$slider).detach();
        if (_.$dots) {
            _.$dots.remove();
        }
        if ( _.$prevArrow && _.$prevArrow.length ) {
            _.$prevArrow
                .removeClass('slick-disabled slick-arrow slick-hidden')
                .removeAttr('aria-hidden aria-disabled tabindex')
                .css('display','');
            if ( _.htmlExpr.test( _.options.prevArrow )) {
                _.$prevArrow.remove();
            }
        }
        if ( _.$nextArrow && _.$nextArrow.length ) {
            _.$nextArrow
                .removeClass('slick-disabled slick-arrow slick-hidden')
                .removeAttr('aria-hidden aria-disabled tabindex')
                .css('display','');
            if ( _.htmlExpr.test( _.options.nextArrow )) {
                _.$nextArrow.remove();
            }
        }
        if (_.$slides) {
            _.$slides
                .removeClass('slick-slide slick-active slick-center slick-visible slick-current')
                .removeAttr('aria-hidden')
                .removeAttr('data-slick-index')
                .each(function(){
                    $(this).attr('style', $(this).data('originalStyling'));
                });
            _.$slideTrack.children(this.options.slide).detach();
            _.$slideTrack.detach();
            _.$list.detach();
            _.$slider.append(_.$slides);
        }
        _.cleanUpRows();
        _.$slider.removeClass('slick-slider');
        _.$slider.removeClass('slick-initialized');
        _.$slider.removeClass('slick-dotted');
        _.unslicked = true;
        if(!refresh) {
            _.$slider.trigger('destroy', [_]);
        }
    };