SUNNYVALE, Calif. (Reuters) - Microprocessor maker Advanced Micro Devices Inc. (AMD) on Thursday said it will lay off 2,000 employees, or 15 percent of its work force, part of its effort to trim expenses by $350 million in 2003 as sales slump. The company said it will reduce its global staff by 2,000 positions by the end of the second quarter of 2003, leading to a charge of ``several hundred million dollars'' in the fourth quarter. The job cuts had been expected. AMD had 13,000 employees at the end of the third quarter. Some 1,000 employees were notified on Thursday,...