Remove unused method, SetAffinity, from the ThreadWrapper class.
The method was also not consistently implemented across all platforms.

R=pbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/33169004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@8212 4adac7df-926f-26a2-2b94-8c16560cd09d
6 files changed