Stopping check-new-releases on 20.04

[Jerry Geis]

 more /etc/apt/apt.conf.d/20auto-upgrades
APT::Periodic::Update-Package-Lists "0";
APT::Periodic::Download-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";
APT::Periodic::Unattended-Upgrade "0";

ps ax | grep check
  14405 ?        S      0:00 /usr/bin/python3
/usr/lib/ubuntu-release-upgrader/check-new-release -q
  14582 pts/0    S+     0:00 grep --color=auto check

How do I correctly stop the check-new-release process ?
I thought setting everything above to 0 was supposed to take care of that.

What did I miss ?

Thanks,

Jerry
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