Revert of Add logging of host lookups made by TurnPort to the RtcEventLog.

webrtc/voice_engine/channel.cc

Index: webrtc/voice_engine/channel.cc
diff --git a/webrtc/voice_engine/channel.cc b/webrtc/voice_engine/channel.cc
index 8c7c88bd0088b364e2677c3e13edc0d3382cb15b..5732e8e52349a8737be31983c12a7e69d33beec1 100644
--- a/webrtc/voice_engine/channel.cc
+++ b/webrtc/voice_engine/channel.cc
@@ -185,11 +185,6 @@
       event_log_->LogProbeResultFailure(id, failure_reason);
     }
   };
-
-  void LogHostLookupResult(int error,
-                           int64_t elapsed_time_in_milliseconds) override {
-    RTC_NOTREACHED();
-  }
 
   void SetEventLog(RtcEventLog* event_log) {
     rtc::CritScope lock(&crit_);