Is it necessary to delete one's account after ceasing to follow TV series and pages related to them, or is that not essential?

Liking forbidden TV series is a promotion of them and a reprehensible act that must be removed. If deleting the account removes these old, inaccessible likes, then you may have to delete it and replace it with another. However, if deleting the account changes nothing, then you are not required to do so, and there is no sin upon you for the persistence of the effect of what you did before repentance, as long as you are unable to remove it. And whoever repents from publishing something forbidden, his repentance is accepted, and the persistence of the effect of his sin does not harm him if he is unable to remove it.