Follow these steps to remove an email account from your iPad:
1. Locate and press the Settings icon.
2. Select Mail, Contacts, Calendars and then choose the Email Account you want to remove from your iPad.
3. Press the Delete Account button.
4.Confirm that you want to delete the account by pressing Delete.
Note: Deleting an email account from your iPad will also remove all messages associated with that account on your iPad.
5. That's it! The email account has been deleted from the iPad and is no longer listed.