By Harry Davies UFC 300 will take place without Conor McGregor as a fight between Alex Pereira and Jamahal Hill will headline the mega-event. McGregor hasn’t fought in over two and a half years but had been pushing for his comeback fight against Michael Chandler to take place on April 13 at UFC 300 in Las Vegas. No event or date has yet been announced for the Irishman’s comeback fight and UFC boss Dana White shut down McGregor’s claims that it will take place on June 29. “When Conor is ready to fight, you know we’ll announce it. That’s what we’ll do,” White said. McGregor moved one step closer…