Miley Cyrus snubbed her estranged father Billy Ray by leaving him out of her Grammys acceptance speech — months after she objected to him getting hitched to a 34-year-old singer named Firerose, RadarOnline.com has learned. On Sunday, the 31-year-old pop star took the stage to accept the award for record of the year. Cyrus, whose song Flowers took home two awards at the ceremony, shouted out her mom and sister Brandi. Cyrus told the crowd, “This award is amazing. But I really hope that it doesn’t change anything because my life was beautiful yesterday. Not everyone in the world will get a Gramm…