Move mock_nonlinear_beamformer to only be a header

webrtc/modules/audio_processing/beamformer/mock_nonlinear_beamformer.cc

Index: webrtc/modules/audio_processing/beamformer/mock_nonlinear_beamformer.cc
diff --git a/webrtc/modules/audio_processing/beamformer/mock_nonlinear_beamformer.cc b/webrtc/modules/audio_processing/beamformer/mock_nonlinear_beamformer.cc
deleted file mode 100644
index aecb0ec0ce8b508bdc8c1cff9e073a13eed55583..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_processing/beamformer/mock_nonlinear_beamformer.cc
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- *  Copyright (c) 2015 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/modules/audio_processing/beamformer/mock_nonlinear_beamformer.h"
-
-#include <vector>
-
-namespace webrtc {
-
-MockNonlinearBeamformer::MockNonlinearBeamformer(
-    const std::vector<Point>& array_geometry)
-    : NonlinearBeamformer(array_geometry) {
-}
-
-}  // namespace webrtc