Remove webrtcvideoengine.cc.

This file is no longer built here or in Chromium and can be removed.

BUG=1695
R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/54599004

Cr-Commit-Position: refs/heads/master@{#9322}
diff --git a/talk/media/webrtc/webrtcvideoengine.cc b/talk/media/webrtc/webrtcvideoengine.cc
deleted file mode 100644
index 6ff09a3..0000000
--- a/talk/media/webrtc/webrtcvideoengine.cc
+++ /dev/null
@@ -1 +0,0 @@
-// TODO(pbos): Remove this file when it's no longer built in Chromium.