Remove stale WebRTC ACM1 TSan suppression

webrtc::acm1::AudioCodingModuleImpl::PlayoutData10Ms can no longer be found in
code search, so remove the style suppression.

Bug: 348511
Change-Id: Id723f1ca2bb0927be198f1b4166f8fd786fc2893
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1620590
Auto-Submit: David Benjamin <davidben@chromium.org>
Commit-Queue: Tommi <tommi@chromium.org>
Reviewed-by: Tommi <tommi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663080}

build/sanitizers/tsan_suppressions.cc

@@ -120,9 +120,6 @@ char kTSanDefaultSuppressions[] =
     // http://crbug.com/347538
     "race:sctp_timer_start\n"
 
-    // http://crbug.com/348511
-    "race:webrtc::acm1::AudioCodingModuleImpl::PlayoutData10Ms\n"
-
     // http://crbug.com/348982
     "race:cricket::P2PTransportChannel::OnConnectionDestroyed\n"
     "race:cricket::P2PTransportChannel::AddConnection\n"