Revert "Adding a test framework for conference mode application in VoE."

This reverts commit fc052055e939fa93d3ab92914e0dc8ed5e5d1d90.
since it was not committed correctly.

I committed it from a wrong machine, which did not have the correct patch.

BUG=
TBR=phoglund@webrtc.org,

Review URL: https://webrtc-codereview.appspot.com/56469005

Cr-Commit-Position: refs/heads/master@{#9289}
4 files changed