title: SlickJS, unslick() remove issue
body: <p>Good Afternoon,</p>
  
  <p>I'm currently working and using <a href="http://kenwheeler.github.io/slick/" rel="noreferrer">SlickJS Carousel</a>, I'm trying to remove several items when the window width is larger than 375 using the <code>unslick();</code> snippet. </p>
  
  <p>I can see the resize function working as when the window size is less than 375 the <code>slick();</code> carousel display without any issues. </p>
  
  <p>If anyone can see whats going wrong please let me know.</p>
  
  <p>Thank you.</p>
  
  <p><strong>JS</strong></p>
  
  <pre><code>$(document).ready(function () {
      // Header Slider 
      $('.touchslider_one').slick({
          autoplay: true,
          infinite: true,
          speed: 1500,
          autoplaySpeed: 3000,
          dots: false,
          slidesToShow: 1,
          slidesToScroll: 1,
          fade: true,
          cssEase: 'linear',
      });
      onresize();
      $(window).resize(function () {
          onresize();
      });
  });
  function onresize(){
      checkWidth();
  }
  function checkWidth() {
      if ($(window).width() &lt; 376 ) {
          // Boxes
          $('.touchslider_fourth').slick({
              autoplay: false,
              infinite: true,
              speed: 1500,
              adaptiveHeight: true,
              dots: false,
              slidesToShow: 1,
              slidesToScroll: 1,
              cssEase: 'linear'
          });
          // Featured Products
          $('.touchslider_three').slick({
              autoplay: false,
              infinite: true,
              speed: 1500,
              adaptiveHeight: true,
              dots: false,
              slidesToShow: 1,
              slidesToScroll: 1,
              cssEase: 'linear'
          });
          // Logos 
          $('.touchslider_two').unslick();
          $('.touchslider_two').slick({
              autoplay: true,
              infinite: true,
              speed: 1500,
              autoplaySpeed: 6000,
              dots: false,
              slidesToShow: 1,
              slidesToScroll: 1,
              cssEase: 'linear'
          });
      } else {
          // Test
          console.log('Larger than 375');             
  
          // Remove
          $('.touchslider_fourth').unslick();
          $('.touchslider_three').unslick();
          $('.touchslider_two').unslick();
          // Rebuild
          $('.touchslider_two').slick({
              autoplay: true,
              infinite: true,
              speed: 1500,
              autoplaySpeed: 6000,
              dots: false,
              slidesToShow: 5,
              slidesToScroll: 5,
              cssEase: 'linear'
          });
      }
  }
  </code></pre>