Urbanski murdered 2nd Lt. Richard Collins in 2017.
A judge ruled the state hadn't provided sufficient evidence to support the charge.
He's charged with murder and a hate crime in the stabbing of 2nd Lt. Richard Collins.
Prosecutors, though, said racist images "poisoned" Urbanski's mind.
The trial, now scheduled for December, was originally slated to occur in January 2018.
About 100 people attended the event.