1 Corinthians 13:8-10 (kjv): Charity never faileth: but whether there are prophecies, they shall fail; whether there be tongues, they shall cease: whether there be knowledge, it shall vanish away.
If I am speaking in tongues in the present moment, there will come a moment where I cease to pray through that venue (see Luke 11:1); which is not to say that I will not pick up and pray in tongues again later. The gifts and the calling of God are without repentance (irrevocable). There will come a day when tongues are no longer needed in order to keep ourselves in the love of God. That day is not today; today we still have spiritual enemies that have not been defeated in the practical sense (although they are defeated because of the Cross; they are still fighting from the position of defeat). We will not always need knowledge of things like history or science; and once that knowledge is not needed any more it will vanish away. After we have been in heaven for 10,000 years, we will probably not remember any more of earth, not because God wiped out our memory but because it will not have relevance any longer and the glories of heaven will overwhelm the memory of earth so that it will be nonexistent except as a faded memory that no longer comes to mind.
So then, neither will prophecies be done away.