No. the flaps must definitely have been lowered atleast one notch for takeoff.
Flaps help improve the aircrafts handling charecteristics on takeoff I remember talking to an A320 pilot, and she said that more than the takeoff itself, flaps help during the phase when the aircraft is between 160 and 190 knots.
ie. an acft CAN takeoff even without flaps, but there could be trouble AFTER takeoff in the phase mentioned above.
Perhaps a pilot could help clarify things.