title: Remove list UICollectionView cell separators
body: <p>I'm trying to build a list similiar to WhatsNewKit(<a href="https://github.com/SvenTiigi/WhatsNewKit" rel="noreferrer">WhatsNewKit</a>) using the new CollectionView API.</p>
  <p>My problem is that I can't seem to remove the cell separators.
  I am using as a cell the UICollectionViewListCell and so far I tried to change the cell separatorLayoutGuide like this <code>cell.separatorLayoutGuide.heightAnchor.constraint(equalToConstant: 0).isActive = true</code>
  but it just tells me that it breaks the CollectionView constraints.</p>
  <p>(  &quot;&lt;NSLayoutConstraint:0x600002364b90 UILayoutGuide:0x60000390a060'UICollectionViewListCellSeparatorLayoutGuide'.height == 0   (active)&gt;&quot;,
  &quot;&lt;NSLayoutConstraint:0x600002364730 'UICollectionViewListCell-height-separatorLayoutGuide-constraint' UILayoutGuide:0x60000390a060'UICollectionViewListCellSeparatorLayoutGuide'.height == 0.333333   (active)&gt;&quot;
  )</p>
  <p>Will attempt to recover by breaking constraint
  &lt;NSLayoutConstraint:0x600002364730 'UICollectionViewListCell-height-separatorLayoutGuide-constraint' UILayoutGuide:0x60000390a060'UICollectionViewListCellSeparatorLayoutGuide'.height == 0.333333   (active)&gt;)</p>
  <p>So is there a way to remove those separators?</p>
  <p><a href="https://i.stack.imgur.com/WSdSq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WSdSq.png" alt="enter image description here" /></a></p>