Revert r9359 "Implement NetEq's CurrentDelay function"

This reverts commit d8a03facf6986a011c8f889c63d87f9216a1e912, since it
broke the Chrome build. Will have to swap to using base/logging.h in
neteq_impl.cc before re-landing this change.

TBR=kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/50219004

Cr-Commit-Position: refs/heads/master@{#9360}
diff --git a/webrtc/modules/audio_coding/neteq/interface/neteq.h b/webrtc/modules/audio_coding/neteq/interface/neteq.h
index 93e8172..88bf208 100644
--- a/webrtc/modules/audio_coding/neteq/interface/neteq.h
+++ b/webrtc/modules/audio_coding/neteq/interface/neteq.h
@@ -210,8 +210,8 @@
   // Not implemented.
   virtual int TargetDelay() = 0;
 
-  // Returns the current total delay (packet buffer and sync buffer) in ms.
-  virtual int CurrentDelayMs() const = 0;
+  // Not implemented.
+  virtual int CurrentDelay() = 0;
 
   // Sets the playout mode to |mode|.
   // Deprecated. Set the mode in the Config struct passed to the constructor.