Revert of Opus implementation of the AudioEncoderFactoryTemplate API

webrtc/api/audio_codecs/opus/audio_encoder_opus.cc

Index: webrtc/api/audio_codecs/opus/audio_encoder_opus.cc
diff --git a/webrtc/api/audio_codecs/opus/audio_encoder_opus.cc b/webrtc/api/audio_codecs/opus/audio_encoder_opus.cc
deleted file mode 100644
index 0969561ed14f8afca21106d9aaaea19ac60fc74f..0000000000000000000000000000000000000000
--- a/webrtc/api/audio_codecs/opus/audio_encoder_opus.cc
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- *  Copyright (c) 2017 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.
- */
-
-#include "webrtc/api/audio_codecs/opus/audio_encoder_opus.h"
-
-#include <memory>
-#include <vector>
-
-#include "webrtc/base/ptr_util.h"
-#include "webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus.h"
-
-namespace webrtc {
-
-rtc::Optional<AudioEncoderOpusConfig> AudioEncoderOpus::SdpToConfig(
-    const SdpAudioFormat& format) {
-  return AudioEncoderOpusImpl::SdpToConfig(format);
-}
-
-void AudioEncoderOpus::AppendSupportedEncoders(
-    std::vector<AudioCodecSpec>* specs) {
-  const SdpAudioFormat fmt = {
-      "opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}};
-  const AudioCodecInfo info = QueryAudioEncoder(*SdpToConfig(fmt));
-  specs->push_back({fmt, info});
-}
-
-AudioCodecInfo AudioEncoderOpus::QueryAudioEncoder(
-    const AudioEncoderOpusConfig& config) {
-  RTC_DCHECK(config.IsOk());
-  AudioCodecInfo info(48000, config.num_channels, config.bitrate_bps,
-                      AudioEncoderOpusConfig::kMinBitrateBps,
-                      AudioEncoderOpusConfig::kMaxBitrateBps);
-  info.allow_comfort_noise = false;
-  info.supports_network_adaption = true;
-  return info;
-}
-
-std::unique_ptr<AudioEncoder> AudioEncoderOpus::MakeAudioEncoder(
-    const AudioEncoderOpusConfig& config,
-    int payload_type) {
-  RTC_DCHECK(config.IsOk());
-  return rtc::MakeUnique<AudioEncoderOpusImpl>(config, payload_type);
-}
-
-}  // namespace webrtc