Michaela Zee editor Michael Keaton, who scored his first Emmy win for best lead actor in a limited or anthology series, reacted backstage to the cancellation of “Batgirl” at the Emmy Awards Monday night. “I think it was a business decision. I’m going to assume it was a good one. I really don’t know,” Keaton said. Last month, it was revealed that Warner Bros. had shelved “Batgirl” and would not release the film on any platform. The DC Comics adaptation, which had a $90 million production budget, starred Leslie Grace as Barbara Gordon/Batgirl. Keaton reprised his role as Batman for the feature, which also starred J.K. Simmons and Brendan Fraser.