you probably have to change your information in your account and take off the redirect
But you will need to contact bravenet by opening a support ticket to cancel hosting on your domain you don't want.
As for the domain itself will still have it till it expires whenever that is then you can just let it go.
But open a support ticket and perhaps can learn more but as said if don't want the one domain anymore you need to cancel payment on it for your hosting anyways.