Removed api call that will break the upcoming thread checking scheme

BUG=webrtc:5099

Review URL: https://codereview.webrtc.org/1472173003

Cr-Original-Commit-Position: refs/heads/master@{#10799}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 96cb5309ed0008fbc14ec55961f684a7ad2e86fd
1 file changed