Deleting a Budget
You can delete your budgets and the associated notifications at any time. You can't recover a budget after you delete it.
To delete a budget
Sign in to the AWS Management Console and open the Billing and Cost Management console at https://console.aws.amazon.com/billing/home#/.
On the navigation pane, choose Budgets.
On the Budgets page, select the budgets that you want to delete, and then choose Delete.
In the Delete Budget box, choose Delete.