A man accused of fatally stabbing a man on Causeway Street on Tuesday night was ordered held without bail yesterday after pleading not guilty at his arraignment in Boston Municipal Court.Mark Love, 55, arrested Wednesday for the death of 53-year-old Darryl Noles of Medford, was identified by witnesses during a police investigation, according to court documents.One witness who reached out to detectives said Love was standing by a liquor store in the area on the night of the stabbing and confessed to stabbing “D Noles,” the name the victim was known by.