By Harry Davies Tyson Fury’s promoter has criticised Oleksandr Usyk for ‘crybabying’ to referees in some of his past fights. Fury was scheduled to fight Usyk for the undisputed heavyweight world titles on Saturday in Saudi Arabia but their fight has been pushed back until May 18 after Fury was cut in sparring. Saudi royal advisor Turki AlAlshikh has promised to fine either Fury or Usyk £10million of their own money if their rescheduled fight is pushed back again. Queensbury Promotions boss Frank Warren, who promotes Fury, thinks one of Usyk’s biggest flaws is being hit to the body. The Ukraini…