Do you mean the story of Adam, Eve, god and the serpent is a myth?
Also, do you mean the devil wasn't in this part of the story or there is or was no devil, period?
Looking at the story from the perception that Adam (masculine force) was tempted to commit a sin by Eve (feminine force) who was tempted by the serpent (negative force), and that it was all created by a loving god (positive force),it just does not make any sense whatsoever. There was never a 'sin' committed.
There are far more logical explanations that don't need rocket science to understand the guidance the bible offers. It is us who complicate it and aren't humble enough to accept a more simple definition.