HTC Nexus One User Manual page 110

Accounts
To remove an account
You can remove an account to delete it and all information associated with it from
your phone, including email, contacts, settings, and so on.
You can't remove some accounts, such the first Google Account you signed into on
the phone, except by deleting all personal information from your phone. See "Privacy
settings" on page 307 to learn now to do that.
1 Open the Accounts & Sync Settings screen.
You can do this in Contacts by pressing Menu
directly in the Settings application.
The Accounts & Sync Settings screen displays your current sync settings and a list
of your current accounts.
2 Touch the account to delete.
Touch Remove account.
3
4 Confirm that you want to remove the account.
NOUG-2.1.0-100
and touching Accounts, or
Nexus One User's Guide
110