Upvote:1
I strongly doubt there's been any of them around for >1500 years, but the 2nd century Marcionites fit the bill (source for quotation):
[Marcion's] canon consisted of two divisions: the Gospel, containing an abbreviated copy of Luke, and the Apostolicon, containing ten Epistles of Paul
As to the justification:
The main points of Marcion's teaching were the rejection of the Old Testament and a distinction between the Supreme God of goodness and an inferior God of justice, who was the Creator and God of the Jews. He regarded Christ as the messenger of the Supreme God.