A federal appeals court on Wednesday threw out a ruling that had cleared the way for a former Kirkland & Ellis LLP litigation partner to collect long-term disability benefits.The 7th U.S. Circuit Court of Appeals directed U.S. Magistrate Judge Susan E. Cox to hold a new trial in a lawsuit Carole Cheney filed against the insurance company that administers Kirkland’s disability plan.Cox “made unsupported factual findings and misinterpreted the governing documents” of the law firm’s disability …