Answer:
Of course not. How can the absence of a belief in the supernatural be evil since it is such a benign state of being. People who create aggressively promoted and aggressively intolerant religious belief systems would seem to be more of a threat to the well-being of others. What we call "evil" is a religious construct and it is more appropriately associated with people who kill other people in the name of religion. Atheism doesn't kill.