Remove an APT Repository in #Ubuntu

$ sudo add-apt-repository --remove ppa:certbot/certbot
The PPA has been DEPRECATED.

To get up to date instructions on how to get certbot for your systems, please see https://certbot.eff.org/docs/install.html.
More info: https://launchpad.net/~certbot/+archive/ubuntu/certbot
Press [ENTER] to continue or Ctrl-c to cancel removing it.

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