EAST RUTHERFORD, N.J. — Coach Ben McAdoo insists the New York Giants didn’t quit in their ugly, one-sided loss to the Los Angeles Rams. While the Giants’ performance in the 51-17 thrashing was ugly and unacceptable, McAdoo hesitated to say Monday that his team played hard to the end. The second-year coach said he didn’t see his players loafing or giving up on plays, signs he says would show a team that quit. McAdoo also said two-time Super Bowl MVP Eli Manning will remain the starting quarterback, and that players and coaches will be held accountable for the poor play. “Every position needs to be held accountable and every position needs to be held to a high standard,” McAdoo said.