Remove webrtcvideoengine.cc.
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-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#9322}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 5ee9f679a550cc243ec94def5e4f321546bbf312

sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle,sippet/talk,dcpang/fatline-libjingle,sippet/talk,sippet/talk,dcpang/fatline-libjingle,sippet/talk,dcpang/fatline-libjingle