Revert of C++ porting of the initial python script for conversational speech generation.

webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py

Index: webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py
diff --git a/webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py b/webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py
new file mode 100644
index 0000000000000000000000000000000000000000..3fc34e399d11c620dfb9ab4b80105118305d6e45
--- /dev/null
+++ b/webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# 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.
+
+import unittest
+
+import generate_conversational_tracks
+
+class TestGenerationScript(unittest.TestCase):
+
+  def TestMain(self):
+    # Exit with error code if no arguments are passed.
+    with self.assertRaises(SystemExit) as cm:
+      generate_conversational_tracks.main()
+    self.assertGreater(cm.exception.code, 0)