I'm not sure why you've posted your question to the Premiere Elements forum, since it's a help file for one of the few programs that not included with the Creative Cloud.
But to remove the Creative Cloud, you just uninstall any CC apps you've installed and then install the Creative Cloud master program.
There's not much more to it than that.
Go into your control panel and de-install the CC desktop app from there.
On the mac you will find it in Applications.