Remove voice_engine_ member variable and GetVoiceEngine() from ViEChannelManager.

This is dead code right now and since the implementation of GetVoiceEngine() grabbed a lock and returned a raw pointer, it's not to be trusted anyway :)

R=mflodman@webrtc.org
BUG=

Review URL: https://webrtc-codereview.appspot.com/37869005

Cr-Commit-Position: refs/heads/master@{#8306}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8306 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed