A 77-year-old inmate awaiting trial following an attempted murder arrest in Hesperia last year died in a jail cell last week, authorities said Tuesday. The man, whose identity was withheld Tuesday pending notification of family, was found unresponsive shortly before 6 p.m. Jan. 22 in a cell at the West Valley Detention Center in Rancho Cucamonga, according to the San Bernardino County Sheriff’s Department. “Deputies at the West Valley Detention Center were conducting hourly safety checks and discovered an unresponsive inmate inside a cell,” the agency said in a written statement . “Deputies and jail medical staff provided emergency…..