SPARTANBURG, S.C.—The former “American Idol” contestant accused of barreling into a man with his pickup truck, killing him, will remain in a South Carolina jail while toxicology results from state investigators are still pending, a judge said Thursday. Circuit Judge Daniel Hall ended the hearing without setting bond for 17-year-old Caleb Kennedy, according to news outlets. The country music singer has been charged as an adult and could face up to 25 years in prison if convicted of driving under the influence resulting in death. Officials said Kennedy on Feb. 8 inhaled marijuana from a vape pen before he drove up a residential driveway and ran over Larry Duane Parris outside the workshop where the 54-year-old repaired boats in Spartanburg County. Kennedy’s lawyer, Ryan Beasley, said Thursday that his client is now on suicide watch in jail and needs to be freed or sent to an alcohol and drug treatment …