If you need to remove your Linode card from your account, follow these instructions:
Log in to your Linode account. Click on your Linode name in the top left corner of the page. Click on Account Details in the top right corner.
Click on Card Details in the top right corner. Click on Remove Card in the top right corner.
Please note that you will lose all data stored on the card if you remove it from your account. Before removing your card, make sure you have backed up all of your data!.