SIMPLE AND EASIEST WAY FOR DELETE AD SENSE ACCOUNT
Click the link given for delete your ad sense account in a minute. You will get the page directly where you will get the page of google payment center and just scroll under and you will get the option of Payment Profile Status and just below of it close the payment profile, then click on it and you will get the final cancellation option there then proceed with it by click continue button. https://pay.google.com/payments/u/1/home#settings