CLEVELAND(AP) The Cleveland Cavaliers shook off some rust, and then the Atlanta Hawks. Newly crowned MVP LeBron James scored 34 points and the well-rested Cavs, who waited nine days between playoff games after a first-round sweep, pulled away in the second half for a 99-72 win over the Atlanta Hawks in their Eastern Conference semifinal opener on Tuesday. Showing why he was voted the league’s best player in a landslide, James added 10 rebounds, three assists and four steals as the top-seeded …