Revert of Added first layer of the echo canceller 3 functionality

webrtc/modules/audio_processing/aec3/block_processor.h

Index: webrtc/modules/audio_processing/aec3/block_processor.h
diff --git a/webrtc/modules/audio_processing/aec3/block_processor.h b/webrtc/modules/audio_processing/aec3/block_processor.h
deleted file mode 100644
index b84b18df81a24fe1cf7ec6329189a7d67001f04b..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_processing/aec3/block_processor.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- *  Copyright (c) 2016 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.
- */
-
-#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_
-
-#include <memory>
-#include <vector>
-
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/modules/audio_processing/logging/apm_data_dumper.h"
-
-namespace webrtc {
-
-// Class for performing echo cancellation on 64 sample blocks of audio data.
-class BlockProcessor {
- public:
-  static BlockProcessor* Create(int sample_rate_hz);
-  virtual ~BlockProcessor() = default;
-
-  // Processes a block of capture data.
-  virtual void ProcessCapture(
-      bool known_echo_path_change,
-      bool saturated_microphone_signal,
-      std::vector<std::vector<float>>* capture_block) = 0;
-
-  // Buffers a block of render data supplied by a FrameBlocker object.
-  virtual bool BufferRender(std::vector<std::vector<float>>* render_block) = 0;
-
-  // Reports whether echo leakage has been detected in the echo canceller
-  // output.
-  virtual void ReportEchoLeakage(bool leakage_detected) = 0;
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_