A veteran aerospace analyst says Boeing has undercut Airbus, causing Hawaiian Airlines to cancel an order for six Airbus jets to buy 787-9 Dreamliners instead. Without identifying his sources, Scott Hamilton of Leeham News reported the move Tuesday from Airbus headquarters in Toulouse, France. Boeing declined comment, while Airbus America spokesman James Darcy said he couldn't "comment on the unconfirmed rumor," adding the European jet maker would defer to the airline "about whether and why they…