Joe Biden looked to recapture his mojo and reassured donors at a Saturday fundraiser that he is fully up to the challenge of beating Donald Trump despite a lackluster debate performance two days prior that has some top Democrats calling for him to step aside. Making matters worse, current and former White House aides are questioning whether Biden could fulfill a second term, per a new report from Axios. “It’s time for Joe to go,” Chandler West, the White House’s deputy director of photography from January 2021 to May 2022, wrote in an Instagram story after from screenshots Axios obtained. “I k…