Emad Mostaque, the former chief executive officer of Stability AI, has given up his controlling shares in the beleaguered startup, according to corporate filings in the UK.Mostaque, who co-founded the company in London in 2019, stepped down as CEO in March after staff departures, several lawsuits and managerial difficulties. The British entrepreneur remained a controlling shareholder, owning at least 75% of shares, according prior filings....