1 Samuel 2:36

"'Then everyone left in your family line will come and bow down before him for a piece of silver and a loaf of bread and plead, "Appoint me to some priestly office so I can have food to eat."'" NIV translation

A family of faithful priests were raised up to replace Eli's family. Eli's descendants became basically hired servants of the priests. They were not faithful to their calling and so the calling was removed.