Please Deauthorize My Account on MAC

Getting Started Newbie Questions
#1

Please Deauthorize My Account on MAC as I have a new macbook pro and no longer have the iMac or old Macbook.

Thanks

#2

I’ll have to deauth them all, I can’t tell one computer from the other…   This should be done.

#3

I’ll have to deauth them all, I can’t tell one computer from the other…   This should be done.