PepsiCo said Tuesday it has agreed to slash 20% of its soda and snack lineup in the US, lower some prices — and layoff an unspecified number of workers — as part of a deal with activist investor Elliott Management.Its well-known array of snacks includes Lay’s, Cheetos, Doritos, and Funyuns, as well as drinks like Pepsi and Mountain Dew. The food giant did not specify which brands would be cut from its lineup. The announcement marked the company’s latest change to product offerings since billionaire Paul Sin ...