Remove dead code

webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h

Index: webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h
diff --git a/webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h b/webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h
index 79f56c9788a1a1b6ea3ea7585ff8c8a912aefbd7..25d548c0c3eb695f4d3ee440817c0b727b047634 100644
--- a/webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h
+++ b/webrtc/modules/audio_coding/codecs/pcm16b/audio_encoder_pcm16b.h
@@ -31,11 +31,6 @@ class AudioEncoderPcm16B final : public AudioEncoderPcm {
   explicit AudioEncoderPcm16B(const Config& config)
       : AudioEncoderPcm(config, config.sample_rate_hz) {}
   explicit AudioEncoderPcm16B(const CodecInst& codec_inst);
-  AudioEncoderPcm16B(int payload_type, const SdpAudioFormat& format);
-
-  static constexpr const char* GetPayloadName() { return "L16"; }
-  static rtc::Optional<AudioCodecInfo> QueryAudioEncoder(
-      const SdpAudioFormat& format);
 
  protected:
   size_t EncodeCall(const int16_t* audio,