Remove unnecessary interface TelephoneEventHandler

webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc

Index: webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
diff --git a/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc b/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
index 291dded3b22b8f5b32149aaff0c5c4b23e22a7c2..bb93f57e93e1035c98cae90f5f2bf641a6a6552c 100644
--- a/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
+++ b/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
@@ -162,9 +162,6 @@ TEST_F(RtpRtcpAudioTest, Basic) {
   module1->SetSSRC(test_ssrc);
   module1->SetStartTimestamp(test_timestamp);
 
-  // Test detection at the end of a DTMF tone.
-  // EXPECT_EQ(0, module2->SetTelephoneEventForwardToDecoder(true));
-
   EXPECT_EQ(0, module1->SetSendingStatus(true));
 
   // Start basic RTP test.