Elon Musk’s can use a whistle-blower’s claims in his legal case against Twitter Inc but the billionaire cannot delay the trial over his attempt to walk away from his US$44 billion deal for the company, a judge ruled on Wednesday. “I am convinced that even four weeks’ delay would risk further harm to Twitter,” wrote Chancellor Kathaleen McCormick of Delaware’s Court of Chancery, in affirming the trial will start next month. Shares of Twitter rose about 4 per cent in early Wednesday trading to US$40.15. “We are hopeful that winning the motion to amend takes us one step closer to...