There may be reasons the aircraft taxies to the rwy without flaps. For instance, if there is snow or slush on the taxiway some SOP's say leave the flaps in till at the runway. Or maybe the aircraft will be de-iced at a remote station.
Not necessarily on the MD8x series, since leaving the flaps in flaps 11 will prevent ice and slush and other stuff from entering the engines. After landing moving flaps to flaps 11 will save you from lots of problems.