According to Ghamidi Sahab, Dua-e-Qunut is optional and has nothing to do with abrogation of Quran.
Ghamidi Sahab writes:
“After the recital in the last rakah of the tahajjud prayer, the Prophet (sws) would say various supplications. They are called the supplications of qunut. For this very purpose, he taught al-Hasan (rta) the following prayer:
اللَّهُمَّ اهْدِنِي فِيمَنْ هَدَيْتَ وَعَافِنِي فِيمَنْ عَافَيْتَ وَتَوَلَّنِي فِيمَنْ تَوَلَّيْتَ وَبَارِكْ لِي فِيمَا أَعْطَيْتَ وَقِنِي شَرَّ مَا قَضَيْتَ إِنَّكَ تَقْضِي وَلَا يُقْضَى عَلَيْكَ وَإِنَّهُ لَا يَذِلُّ مَنْ وَالَيْتَ تَبَارَكْتَ رَبَّنَا وَتَعَالَيْتَ
O Lord! Guide me by including me among those whom You have guided and give me tranquillity by including me among those whom You have given tranquillity and make me [your friend] by including me among those whom You have befriended and shower Your blessings on what you have given me, and save me from the evil of things which You have ordained for me. Indeed, it is You who decides and no one can pass judgement on You and indeed the person whom You befriend is never humiliated. Very great and very Blessed and very Majestic are You O Our Lord!”