(Reuters) -A Florida jury on Thursday decided to spare Nikolas Cruz, the gunman who killed 17 people in 2018 at a high school in the city of Parkland, from the death penalty, instead calling for life in prison without possibility of parole. Some family members of victims shook their heads in the Fort Lauderdale courtroom as the jury rejected the prosecution’s request for the death penalty for Cruz in one of the deadliest school shootings in U.S. history. Cruz, 24, showed little emotion while sitting at the defense lawyers’ table attorney as the verdict was read. Cruz pleaded guilty last year t…