by Laurie Sullivan @lauriesullivan , 5 hours ago Microsoft will shut down its current version of LinkedIn in China to rid the site of social networking features, making it the last major U.S. social network to leave the country. Microsoft announced Thursday in a post that after facing a significantly more challenging operating environment and greater compliance requirements in China, LinkedIn would replace its current version with a job-board service, removing social media features like the ability to share opinions and news stories. The job board will likely retain search features to find job openings. LinkedIn entered China in 2014....