To remove the card you can cancel the card. But make sure the card is locked before cancelling as this is irreversible step.
Note- Owner's card can not be cancelled. Only team member's cards can be cancelled.
1- Login to Karbon dashboard
2- Select the card that you want to cancel.
3- Click on cancel button available under Control option of the Card
- Click on terminate the card.
- Click on the radio button I don't need this card anymore
- Click Next
Enter the OTP and click Next to confirm.
The card will not be visible anymore in card section.