Is there such a possibility? Almost every class has 3 specializations and with updates skills are changed so that they become passive or you no longer have them.
However, they are not removed from the bars and continue to occupy bars, so you always have to look under talents and in the spell book to see if you still have the skills
By the way, I don’t understand at all why such a problem exists. Why can’t the game simply automatically remove unusable skills?