By Victoria Johns Elton John and Prince Harry used to get on famously well until the Spare star ended up being blacklisted from the singer’s Oscars party, according to reports. Harry, 38, who for years was always welcome at the annual A-list bash in Hollywood, shared a close bond with the Rocket Man star, 76, after Elton performed a heartfelt rendition of Candle in the Wind at Princess Diana’s funeral in 1997. However, when Harry asked the singer if he and wife Meghan Markle could hide out at Elton’s mansion in France when he felt like he was “losing it” from “press intrusion”, things reported…