The Chris Smith Era ended Tuesday, Jeremy Tyler practiced and coach Mike Woodson promised there would be no friction between J.R. Smith and the Knicks’ new 6-foot-10 big man. The Knicks announced Tyler, who was the last cut of training camp, re-signed with the club after averaging 18 points, 10 rebounds on 48 percent shooting in six games with Erie of the D-League. Chris Smith, J.R.’s brother, was cut to make room on the 15-man roster. In a controversial move that raised eyebrows across the league, the unproven point guard was kept as 15th man on the roster in late October with Tyler rehabbing from a broken left foot. But the controversy continued as Smith was about to be waived. J.R. posted an Instragram message in which he quoted a mob movie: “You know the sad thing about betrayal? It never comes from an enemy.” That was an inauspicious greeting for Tyler, the vibrant big who impressed brass during the Las Vegas Summer League and figures to get a crack at energizing the Knicks’ lackluster rebounding unit.