How can I remove the default Google Account on my phone? I no longer want to link my default Google Account on my phone. I have a Nexus One runnin 2.2.1.

How can I unlink my Google account?
Set up a new gmail account (you have to have one associated with the phone). Next, on your phone go to settings > applications > manage applications > gmail and choose "clear all data" do this for gtalk and google voice too if you have them set up. This should prompt you to start the account setup on the phone where you'll enter your new gmail acct info.