Remove Adsense account Completely

How to remove your Adsense account

To remove your AdSense account, follow the below link and request an account removal. You should receive your final payment within approximately 90 days of the end of the month if you had payments pending.
Direct removal link: http://www.google.com/adsense/support/bin/request.py?hl=en&contact_type=request_cancellation&rd=1

OR

To permanently Remove  your account:

1. Sign in to your AdSense account.
2. Click the gear icon and select Settings.
3. In the "Account information" section, click cancel account.
4. Review the information on the "Cancel account" page: ...
5. When you receive your cancellation email, click on the link to complete the cancellation process.