Hawaiian Airlines claims Mesa Air Group CFO Peter Murnane destroyed evidence that supports its contention that the Phoenix-based carrier used confidential information about Hawaiian to launch its go! subsidiary last year. In a briefing filed in U.S. Bankruptcy court in Honolulu, Hawaiian’s lawyer charged Murnane with “willful and deliberate spoliation of evidence that existed on three of his computers.”  Scheduled to have gone to trial on September 25, Hawaiian’s lawsuit charges Mesa with violating a confidentiality agreement it signed as a potential investor during Hawaiian’s bankruptcy. Hawaiian seeks monetary damages and an injunction barring go! from selling tickets for a year.