Can a Patron Saint formally declared as such by a pope be replaced?

In the post https://christianity.stackexchange.com/questions/60457/can-patron-saints-be-dethroned there seems to be some confusion between a patron saint having become no longer a patron saint, and a patron saint being "decanonized". Here, I specifically ask: When **a Pope declares a Saint to be a patron of something** (say, St. John Vianney who was first declared "Patron Saint of Parish Priests" by Pope Pius IX in 1929, and later made "Patron Saint of All Priests" by Pope Benedict XVI in 2010) can that Saint's office of *patron* ever be revoked by another Pope? Has it ever happened?