Remove system_wrappers/interface/trace_event.h

BUG=

Review URL: https://codereview.webrtc.org/1417773002

Cr-Original-Commit-Position: refs/heads/master@{#10346}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: e4f96501fc5b3e6de0d1ccd262372afcda1f5b4f
22 files changed