It doesnot require any deactivation what will happen whenever you install it one new computer it gets activate and as per adobe you can install it on two computers but whene ever you install it on third computer it will automatically deactivate from first one.
Or you can run your Creative cloud App and on very top right corner you will see settings icons there you can click on preferences and under general Tab go to Account and sign Out from There.
Settings->Preferences->General Tab->Account->Sign out
1 person found this helpful
Sign Out for the CC versions of the applications is the equivalent of Deactivate for CS6 and earlier versions.