Remove ESM Nag from Ubuntu

Since January 2023, there have been some questions mentioning ESM Apps, that seem to have caused confusion among myself and others
On running sudo apt update, users will get a notification similar to this, stating that several packages from the universe repository have security updates that require Ubuntu Pro:

The following security updates require Ubuntu Pro with 'esm-apps' enabled:
  imagemagick libopenexr25 libmagick++-6.q16-8 libmagickcore-6.q16-6-extra
  libmagickwand-6.q16-6 imagemagick-6.q16 libmagickcore-6.q16-6
  imagemagick-6-common

To remove nag:

sudo mkdir /etc/apt/apt.conf.d/off;
sudo mv /etc/apt/apt.conf.d/20apt-esm-hook.conf 
/etc/apt/apt.conf.d/off;