Assuming you mean in the Passport sign-in list, you can remove Passports in the sign in list
by clicking the Start Button, then click the Control Panel. Then, click User Accounts in the
Control Panel. Select your account name, and then on the left side of the screen, under
Related Tasks, click 'Manage my Network Passwords'. In the window that opens, you can remove
accounts by clicking the passport you wish to delete [denoted by (Passport)], and then click
the 'Remove' button.