Cruise LLC, the General Motors Co. autonomous vehicle unit, said Thursday it’s laying off 24% of its workforce amid a series of company changes it’s undertaking while under scrutiny for its safety standards. The company said in a Thursday blog post that the staff reduction comes “as a result of our updated operating plans.” About 900 employees, primarily in commercial operations and related corporate functions, were affected by the decision. On Wednesday, Cruise let go of nine employees, including “key leaders,” following an analysis of an Oct. 2 pedestrian accident in San Francisco involving …