Amelia quickly answered this question quickly: "Cornelius, you don’t need to panic. The prophecy is already fulfilled since the attack, because the boy would have the power to vanquish the man, and Lucius and I have been able to listen to the prophecy, when we have visited the prophecy halls." Cornelius sighed in relief. So, they don’t need the boy and to be honest, using a child to solve their problems would look in front of the other magical societies really bad. Cornelius was glad that the soul pieces were destroyed and You-Know-Who had only one remaining horcrux.