Please follow these steps to remove an Internet Radio from your online account:
After you login into your online account you will find " I want to" drop down box just below your Radio Id. Please click on that drop down box.
You will find " Change my package (get more great programming) " option. Please select that option.
You can choose to remain on same package.
At the end you will have to select " No Thanks, I do not want to add SiriusXM Internet Radio " option and press on continue button.
You can easily delete your Internet Radio using above steps.