Not much to say here just a few lines to remove a lot of login clutter.

sed -i 's/ENABLED=1/ENABLED=0/' /etc/default/motd-news
chmod -x /etc/update-motd.d/10-help-text
truncate -s 0 /var/lib/ubuntu-release-upgrader/release-upgrade-available
touch /etc/cloud/cloud-init.disabled