Deleting iCloud email account.

Hello.

I have created an iCloud account (my Apple ID), however, after setting up my iCloud account, I was prompted to create an iCloud email account ([username]@icloud.com). I did create one, because it said if I did I would be able to access things such as "iCloud emails." However, I know I will never use it and want to delete it. Where do I access my iCloud email account and how do I delete it?

I have an iPhone 5 and also a Windows 7 laptop, so a way to delete this account on either of those devices would be greatly appreciated.

Thank you in advance for any responses, as I've been out of luck in terms of finding anything to answer my question.