Chris Hemsworth spent an hour on the phone to Kevin Costner in a bid to convince him to hand over a movie part he really wanted. The 40-year-old ‘Thor’ star has confessed he fell in love with a role in a film which Costner plans to direct and star in, so he attempted to persuade the veteran screen star to cast him instead – but his mission failed and Costner decided to keep the part for himself. Hemsworth told ‘Entertainment Tonight’: “There was a movie, a script that I’d read and loved and was like, ‘I want to get that,’ and then someone said, ‘Kevin Costner has that [role]’. “I’d love [to ha…