Remove audio_device_test_func.

webrtc/modules/audio_device/test/README.txt

Index: webrtc/modules/audio_device/test/README.txt
diff --git a/webrtc/modules/audio_device/test/README.txt b/webrtc/modules/audio_device/test/README.txt
deleted file mode 100644
index 7435ac5db99a4b62e73bf3ef39d8d048ea265037..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_device/test/README.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-INSTRUCTIONS:
-
-- Start with test #3 (Device enumeration) to get an overview of the available
-  audio devices.
-- Next, proceed with test #4 (Device selection) to get more details about 
-  the supported functions for each audio device.
-- Verify two-way audio in test #5. 
-  Repeat this test for different selections of playout and recording devices.
-- More detailed tests (volume, mute etc.) can also be performed using #6-#11.
-
-NOTE:
-
-- Some tests requires that the user opens up the audio mixer dialog and 
-  verifies that a certain action (e.g. Mute ON/OFF) is executed correctly.
-- Files can be recorded during some tests to enable off-line analysis.
-- Full support of 'Default Communication' devices requires Windows 7.
-- If a test consists of several sub tests, press any key to start a new sub test.
-
-KNOWN ISSUES:
-
-- Microphone Boost control is not supported on Windows Vista or Windows 7.
-- Speaker and microphone volume controls will not work as intended on Windows
-  Vista if a 'Default Communication' device is selected in any direction.