To remove the text that says: Graph this data and manage this system at https://landscape.canonical.com/
while keeping the useful system information, edit the script that puts Landscape information into the message of the day (MOTD):
sudo nano -w /etc/update-motd.d/50-landscape-sysinfo
The last line currently reads:
/usr/bin/landscape-sysinfo
Change this to say (on one line):
/usr/bin/landscape-sysinfo --exclude-sysinfo-plugins=LandscapeLink
Save the file (Ctrl-X, Y, Enter)
Test this by running:
/etc/update-motd.d/50-landscape-sysinfo
It should look like:
System information as of Tue Nov 24 13:28:10 <span class="caps">GMT</span> 2009</p>
System load: 0.0 Memory usage: 37% Processes: 99
Usage of /: 22.5% of 12.92GB Swap usage: 0% Users logged in: 1