After you enable two-factor authentication, if you do not want to use this feature, please follow the method described on this page.
Please do not uninstall the auth app or remove the account in the auth app. Uninstalling the auth app or remove the account in the auth app does not release the two-factor authentication.
Disable Two-factor Authentication
Go to "My Account", find the two-factor authentication, and click "disable":
in the disable page, enter the verification code from auth app, click the“Disable”button.
The two-factor authentication has been disabled. You can re-enable it if you needed.