Remove tsan suppressions for RemoteNtpTimeEstimator in WebRtcBrowserTest.

Bug fix in https://webrtc-codereview.appspot.com/24379004.

BUG=389098

Review URL: https://codereview.chromium.org/1184633008

Cr-Original-Commit-Position: refs/heads/master@{#335015}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 55a307ec846f48b23efcf58ec889274d5a289fae

sanitizers/tsan_suppressions.cc

@@ -270,9 +270,6 @@ char kTSanDefaultSuppressions[] =
 "race:g_next_user_script_id\n"
 
 // http://crbug.com/389098
-"race:webrtc::RtpToNtpMs\n"
-"race:webrtc::UpdateRtcpList\n"
-"race:webrtc::RemoteNtpTimeEstimator::Estimate\n"
 "race:webrtc::voe::TransmitMixer::EnableStereoChannelSwapping\n"
 
 // http://crbug.com/397022