So where does it say that it's no longer assigned to them?
2-61
And when ye said: O Moses! We are weary of one kind of food; so call upon thy Lord for us that He bring forth for us of that which the earth groweth - of its herbs and its cucumbers and its corn and its lentils and its onions. He said: Would ye exchange that which is higher for that which is lower? Go down to settled country, thus ye shall get that which ye demand. And humiliation and wretchedness were stamped upon them and they were visited with wrath from Allah. That was because they disbelieved in Allah's revelations and slew the prophets wrongfully. That was for their disobedience and transgression.
3-112
Ignominy shall be their portion wheresoever they are found save (where they grasp) a rope from Allah and a rope from men. They have incurred anger from their Lord, and wretchedness is laid upon them. That is because they used to disbelieve the revelations of Allah, and slew the prophets wrongfully. That is because they were rebellious and used to transgress.
5-18
The Jews and Christians say: We are sons of Allah and His loved ones. Say: Why then doth He chastise you for your sins? Nay, ye are but mortals of His creating. He forgiveth whom He will, and chastiseth whom He will. Allah's is the Sovereignty of the heavens and the earth and all that is between them, and unto Him is the journeying.