fix WARN in delete: return should be a list, not a struct
fix WARN in delete: return should be a list, not a struct

tcmitchell/geni-tools,plantigrade/geni-tools,plantigrade/geni-tools,ahelsing/geni-tools,ahelsing/geni-tools,GENI-NSF/gram,GENI-NSF/gram,tcmitchell/geni-tools,GENI-NSF/gram