In-app Account Deletion

Based on Apple's guideline 5.1.1 (https://developer.apple.com/app-store/review/guidelines/#5.1.1), apps that allow account creation must allow account deletion. Our app only requires a specific ID and birthdate for in-app registration or account activation. But the actual account creation does not happen in-app. Does our app also need account deletion functionality as well?

Thanks in advance.