title: apt update: Target Packages is configured multiple times
body: <p>When running sudo apt update I got the following warning :</p>
  <pre><code>W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list:54 and /etc/apt/sources.list.d/cuda-ubuntu1804-x86_64.list:1
  </code></pre>
  <p>Any clue on how to fix it ?  I'm using ubuntu 18.04</p>