Remove legacy audio device glue files.

I cannot find any references to these old locations.

TESTED=
git cl try -c --bot=win_compile_rel --bot=linux_compile_rel --bot=android_compile_rel --bot=mac_compile_rel --bot=ios_rel -m tryserver.webrtc

R=henrikg@webrtc.org

Review URL: https://codereview.webrtc.org/1421723009 .

Cr-Commit-Position: refs/heads/master@{#10564}
diff --git a/webrtc/modules/audio_device/main/interface/audio_device.h b/webrtc/modules/audio_device/main/interface/audio_device.h
deleted file mode 100644
index 71f16b6..0000000
--- a/webrtc/modules/audio_device/main/interface/audio_device.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- *  Copyright (c) 2012 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 MODULES_AUDIO_DEVICE_MAIN_INTERFACE_AUDIO_DEVICE_H_
-#define MODULES_AUDIO_DEVICE_MAIN_INTERFACE_AUDIO_DEVICE_H_
-
-#include "webrtc/modules/audio_device/include/audio_device.h"
-
-#endif  // MODULES_AUDIO_DEVICE_MAIN_INTERFACE_AUDIO_DEVICE_H_
diff --git a/webrtc/modules/audio_device/main/source/OWNERS b/webrtc/modules/audio_device/main/source/OWNERS
deleted file mode 100644
index 3ee6b4b..0000000
--- a/webrtc/modules/audio_device/main/source/OWNERS
+++ /dev/null
@@ -1,5 +0,0 @@
-
-# These are for the common case of adding or renaming files. If you're doing
-# structural changes, please get a review from a reviewer in this file.
-per-file *.gyp=*
-per-file *.gypi=*
diff --git a/webrtc/modules/audio_device/main/source/audio_device.gypi b/webrtc/modules/audio_device/main/source/audio_device.gypi
deleted file mode 100644
index 126eb98..0000000
--- a/webrtc/modules/audio_device/main/source/audio_device.gypi
+++ /dev/null
@@ -1,14 +0,0 @@
-# Copyright (c) 2012 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.
-
-{
-  'includes': [
-    '../../audio_device.gypi',
-  ],
-}
-