LOS ANGELES—The Academy of Motion Picture Arts and Sciences has moved up its meeting to discuss possible sanctions against best actor winner Will Smith for slapping presenter Chris Rock to Friday, a letter from the group’s president said. The board of governors of the organization, the group that hands out the Academy Awards, previously had been scheduled on April 18 to discuss the incident at last month’s Oscars ceremony. Smith resigned from the academy on Friday and said he would accept whatever consequences the group decided were appropriate. Because Smith resigned, the academy no longer needs to follow the legally prescribed timetable to consider the matter, academy President David Rubin said in a letter to members. “It is in the best interest of all involved for this to be handled in a timely fashion,” Rubin said. Possible actions could include making Smith ineligible for future awards or banning him from …