By Wilton Jackson Davis marks the third UNC starter to return after the Tar Heels’ Final Four run. View the original article to see embedded media. First, it was Armando Bacot. Leaky Black was second. On Saturday, Tar Heels guard R.J. Davis announced that he was returning to North Carolina for his junior season in a Meek Mill-themed video. “I thought I was leaving. Nah, let’s run it back,” Davis said in the video. Davis was the fourth-leading scorer for the Tar Heels this season, averaging 13.5 points, 4.3 rebounds and 3.6 assists while shooting 42.5% from the floor. Davis was part of a lineup…