Disable flaky AudioStats.NoLoss test.

BUG=none

Review-Url: https://codereview.webrtc.org/3013783002
Cr-Commit-Position: refs/heads/master@{#19928}
diff --git a/audio/test/audio_stats_test.cc b/audio/test/audio_stats_test.cc
index 86bdbf2..a52ddee 100644
--- a/audio/test/audio_stats_test.cc
+++ b/audio/test/audio_stats_test.cc
@@ -109,7 +109,7 @@
 
 using AudioStatsTest = CallTest;
 
-TEST_F(AudioStatsTest, NoLoss) {
+TEST_F(AudioStatsTest, DISABLED_NoLoss) {
   NoLossTest test;
   RunBaseTest(&test);
 }