You can uninstall CloudLinux Subsystem For Ubuntu by running the following commands:

# Install Python 3 if you don't have it
apt install python3

wget https://repo.cloudlinux.com/cloudlinux-ubuntu/sources/cln/ubuntu2cloudlinux.py

python3 ubuntu2cloudlinux.py --uninstall

reboot

The script will:

• Remove the CloudLinux OS components which are installed on your system, going over the following list: lve, kmodlve-dkms, lve-utils, lve-stats, lvemanager, cagefs, alt-python, alt-php, db-governor.
• Remove configs for CloudLinux repositories for Ubuntu.
• Ask you to check for remaining packages from CloudLinux and manually reboot your system.