Revert "Set autocrlf to true in .gitattributes"
Revert "Set autocrlf to true in .gitattributes"

This reverts commit 74819efb476b62f29370950261bccc7009d7d5fa,
due to errors when running git 1.8.1.5

Purdue-ACM-SIGAPP/SafeWalk,Purdue-ACM-SIGAPP/SafeWalk,Purdue-ACM-SIGAPP/SafeWalk,Purdue-ACM-SIGAPP/SafeWalk,Purdue-ACM-SIGAPP/SafeWalk,Purdue-ACM-SIGAPP/SafeWalk