title: Swiper js showing 3 identical slides when there is one slide
body: <p>I'm trying to have 3 visible slides in the page. The problem is that whenever there are less than 3 slides those slides are duplicated to fill also the empty spaces so, for instance, if I have just one slide it shows three identical copies of the same slide.
  Is there any way to avoid that ? I would like just the single slide to be shown.</p>
  <p>Here's the configuration of the swiper:</p>
  <pre><code>var swiper = new Swiper('.campaign-slider-two', {
      slidesPerView: 3,
      spaceBetween: 0,
      autoplay: {
          delay: 5000,
          disableOnInteraction: false,
      },
      breakpoints: {
          768: {
              slidesPerView: 2,
          },
          767: {
              slidesPerView: 1,
          },
      },
      pagination: {
          el: '.campaign-pagination',
          clickable: true,
      },
      loop: true,
  });
  </code></pre>
  <p>I took a look at the Swiper documentation but I couldn't find anything about this kind of configurations.
  How to solve this issue?</p>