Remove ACMCodecDB::CodecFreq

webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 322 matching lines @@
 
   // We didn't find a matching codec.
   return -1;
 }
 // Gets codec id number from database for the receiver.
 int ACMCodecDB::ReceiverCodecNumber(const CodecInst& codec_inst) {
   // Look for a matching codec in the database.
   return CodecId(codec_inst);
 }
 
-// Returns the codec sampling frequency for codec with id = "codec_id" in
-// database.
-int ACMCodecDB::CodecFreq(int codec_id) {
-  const size_t i = static_cast<size_t>(codec_id);
-  const auto db = RentACodec::Database();
-  return i < db.size() ? db[i].plfreq : -1;
-}
-
 }  // namespace acm2
 
 }  // namespace webrtc