(Reuters) - Nike Inc on Friday warned of job cuts as the world's largest footwear maker ramps up efforts to sell directly to customers through its online and retail channels.The planned layoffs come after the company on Thursday reported a $790 million (£637 million) quarterly net loss, its first in more the two years, as its wholesale business bore the brunt of footwear retailers and department stores shutting down due to the coronavirus outbreak.Shares of the Dow component were down 6% in..