And they charge $10 to remove it from the license
He can ignore that. Florida does not have licenses, and New York has no power over the gun in Florida. They are revoking his license to possess it or carry it in New York.
Beyond that, they have no power. In Florida there is no such thing as a “title” or document of ownership.
And he can give to Melania or his son, or his gardener that it now belongs to them. And that’s it... no paperwork required.