SoftBank Group Corp is on track to win a key corporate battle by ousting a defiant chief executive from a Chinese joint venture of British chip designer Arm, in a two-year drama that has ended with the apparent help of the Chinese government. Arm China has registered Liu Renchen – a member of Shenzhen’s political advisory committee and a deputy dean at the Research Institute of Tsinghua University in the southern city – as its new legal representative, replacing incumbent CEO Allen Wu, according to a company statement published on Thursday on Chinese social media platform Weibo. The registration was…