BEIJING – China is pulling the plug on an older version of Microsoft Corp’s Windows tailored for government agencies, taking another step toward rooting out the world’s most popular PC software in a broader effort to reduce its dependence on foreign technology.The Chinese Ministry of State Security recently told some state-linked entities to uninstall customised Windows 10 software from their machines, people familiar with the matter said.That moves up the schedule to discontinue the operating system by several months, they added, underscoring Beijing’s increasing discomfort with using a key US technology.That particular version of Windows 10 is developed by C&M...