Ubuntu - PPA Repository - Delete PPA Repository

Using the add-apt-repository Command

sudo add-apt-repository --remove ppa:<ppa-name>
sudo apt update

Manually Deleting PPA Files

Navigate to the Sources Directory

cd /etc/apt/sources.list.d/

List all the files in the directory

ls

Remove the PPA File

sudo rm <ppa-file>.list

Update the Package List to reflect the changes

sudo apt update

Using the ppa-purge Utility

Install ppa-purge

sudo apt install ppa-purge

Remove the PPA

sudo ppa-purge ppa:<ppa-name>