Google Device Manager on CyanogenMod - How to stop asking me to unlock phone all the time?
I found the way to solve this.

1- Unlock the phone (as usual) 
2- Go to settings 
3- Go to Device
4 Go to lock screen 
5 Select none 
6 Press back 
7 Turn off your screen, wait 5 seconds, and turn on again and you should have no lock at all.
8- Problem solved.


If you want to add a "normal" lock screen again, repeat steps 2, 3 and 4 and select your lock screen.