Jordan kicked them out when the Palis tried to overthrow the monarchy; The Jordanian army killed them by the thousands. Remember the “Black September” terrorist group? Well, “Black September” was when the Jordanians crushed a Pali uprising in 1970.
Nobody wants the Arabs of “Palestine.”
They remind me of the nomadic outlaws in the "Road Warrior" and "Mad Max" films. Bloodthirsty degenerates who trample on civilized peoples. No purpose to exist except to wreak havoc. The Arab nations at large keep them that way to hurt the very tiny Jewish nation. The Arab nations have more than enough riches and land to take in the Arabs of "Palestine", but will not, which is a major reason why I dislike Arabs in general - besides their idiotic muslim faith. (Note that there are good Arabs of "Palestine", but they are mostly Christian.)