Carmelo Anthony is upset. The retired Knicks legend who started his NBA career with the Denver Nuggets had some choice words for the organization that drafted him third overall in the 2003 NBA Draft. Anthony, who wore No. 15 with the Nuggets before switching to No. 7 after joining the Knicks, called it “a petty maneuver” for Denver to allow Nikola Jokic to wear the same number he wore with the Nuggets. In an episode of his new show with Mero, 7PM in Brooklyn, Anthony even suggested the Nuggets forced the No. 15 on Jokic, whom they selected 41st overall in the 2014 NBA draft, in an effort to “e…