Deleting your iCloud account from a mobile device is very easy. Just navigate to the settings on your device and find iCloud. Touch the iCloud button and scroll to the bottom of the screen and tap Delete Account.
You’ve deleted the iCloud account from your device, but that doesn't’t delete your account on iCloud.com. You can still use the user name and password XXX selected when signing up for iCloud to log in on the iCloud website.
Apple has not directly addressed the issue of deleting an iCloud account from the website. SO the answer is to remove it from your device and not worry about it anymore.
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I DID NOT ask you how to delete my icloud from a MOBILE DEVICE.
I SPECIFICALLY asked how to delete my icloud from MY PC!!!
I had already deleted it from my iphone at the Apple Store!!
I also delelted it from my IPAD!!
NOW, how do I delete it from my PC?????????