Remove ACMCodecDB::CodecFreq

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

Index: webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc b/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
index b69f5457c1343f201d992ff1cf7648b67bc0ab4a..0855dd648a5f1fb123db48d862c875b16b64d7f6 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc
@@ -340,14 +340,6 @@ int ACMCodecDB::ReceiverCodecNumber(const CodecInst& codec_inst) {
   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