First, you being a minor writing "illicit" stories is not illegal. And so long as your characters were within legal requirements, the books are perfectly legal. The only potential illegality in the situation is that you falsified your age and presented yourself as 18 or higher when opening the accounts. As such, its a violation of the contract with Amazon and other retailers. Presuming your parents or guardians were unaware of your actions, then it would be grounds for them to close your account, ban you permanently, and potentially sue you (though they likely won't unless you made a ton of money).
Are these physical, paperback books or e-books? For e-books, you presumably already pull them yourself from your account, yes? Those pages do go away.
For paperback, they have absolutely no legal requirement to remove a data page about them. The books now exist. Whether you published them in violation of the terms of service or not is irrelevant, the books themselves are not illegal goods. They existed, they are products, and presumably were sold at some point. Amazon keeps a listing for pretty much all physical books that they sell at some point in their system, regardless of availability, because they use them as a landing page for people wanting to sell used copies. If no copies were ever sold, you could try escalating it up the chain, but keep in mind that in doing so you will only also call attention to your actions and get yourself permanently banned from publishing again through KDP and/or CreateSpace.
Goodreads likewise has no obligation to remove them and probably won't. It was published, whether you now regret it or not. They aren't sales venues, just a database of books that existed.
Long story short, you made an unfortunate mistake that you now regret, but Amazon and other retailers, nor are sites like Goodreads responsible for trying to clean it up, particularly now that you are no longer a minor. Even if one or both did eventually decide to remove the pages to avoid PR issues, it isn't going to remove those records from existence. Once its on the internet, it is pretty permanent and archives and pages with them will still likely exist out there.