How do I permanently delete iTunes account

Hello how are you all?

I am a visitor from India , I recently bought and iPad and to download some music and movies I created an iTunes account .

But I'm gifting this iPad to somebody and want to make sure that my iTunes account is deleted before giving it away.

I signed in to manage my account billing and purchases but the system merely allows me to edit my credit card info not totally erase it.

Also I don't want to just sign out and give it away, I need that no credit card info is in my iTunes account before giving it.

I've tried the obvious ways to manage and edit the account but I don't see anything to delete

Even restoring the iPad with the reset feature doesn't delete the account info , it just signs you out

I don't know though if erasing data on the iPad would help

Please do help

Thanks