Remove webrtc/sound/ subdir.

webrtc/sound/sound_tests.gypi

Index: webrtc/sound/sound_tests.gypi
diff --git a/webrtc/sound/sound_tests.gypi b/webrtc/sound/sound_tests.gypi
deleted file mode 100644
index a0713c31399364ce43660c83c6120b28e291134b..0000000000000000000000000000000000000000
--- a/webrtc/sound/sound_tests.gypi
+++ /dev/null
@@ -1,23 +0,0 @@
-# Copyright (c) 2014 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': [ '../build/common.gypi', ],
-  'targets': [
-    {
-      'target_name': 'rtc_sound_tests',
-      'type': 'none',
-      'direct_dependent_settings': {
-        'sources': [
-          'automaticallychosensoundsystem_unittest.cc',
-        ],
-      },
-    },
-  ],
-}
-