Remove TODO referring to issue1981, which I just marked WontFix.

TBR=aluebs@webrtc.org
BUG=webrtc:1981

Review URL: https://codereview.webrtc.org/1409253008 .

Cr-Original-Commit-Position: refs/heads/master@{#10488}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: f1104f6d66091d1a6f75e96654afd82788b35e90
1 file changed