Revert "Pull the Voice Activity Detector out from the AGC"

This reverts commit 34be126c1b3ee60ecdb86b1de41a0648347450b2.

It breaks Chromium ASAN.

TBR=niklas.enbom@webrtc.org

Review URL: https://codereview.webrtc.org/1192863006.

Cr-Original-Commit-Position: refs/heads/master@{#9472}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: f260fc21360ac5f599e64ce9ea2ea616909eca44
39 files changed