title: raspberrypi: sudo apt-get update isn't working
body: <pre><code>pi@raspberrypi:~ $ sudo apt-get update
  Hit:1 http://archive.raspberrypi.org/debian buster InRelease
  Hit:2 http://raspbian.raspberrypi.org/raspbian buster InRelease
  Ign:3 https://raspbian.snips.ai/buster stable InRelease
  Err:4 https://raspbian.snips.ai/buster stable Release
  404 Not Found [IP: 143.204.15.89 443]
  Reading package lists... Done
  E: The repository 'https://raspbian.snips.ai/buster stable Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  
  configuration details.
  </code></pre>