audio_coding: remove "main" directory

webrtc/modules/audio_coding/test/TestVADDTX.cc

Index: webrtc/modules/audio_coding/test/TestVADDTX.cc
diff --git a/webrtc/modules/audio_coding/main/test/TestVADDTX.cc b/webrtc/modules/audio_coding/test/TestVADDTX.cc
similarity index 97%
rename from webrtc/modules/audio_coding/main/test/TestVADDTX.cc
rename to webrtc/modules/audio_coding/test/TestVADDTX.cc
index bba7b91c40e93a47257d8ff8de5ff98615b14ef3..98b1224762ddd6e72df426b9aaf776a2c302ed0a 100644
--- a/webrtc/modules/audio_coding/main/test/TestVADDTX.cc
+++ b/webrtc/modules/audio_coding/test/TestVADDTX.cc
@@ -8,13 +8,13 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_coding/main/test/TestVADDTX.h"
+#include "webrtc/modules/audio_coding/test/TestVADDTX.h"
 
 #include <string>
 
 #include "webrtc/engine_configurations.h"
-#include "webrtc/modules/audio_coding/main/test/PCMFile.h"
-#include "webrtc/modules/audio_coding/main/test/utility.h"
+#include "webrtc/modules/audio_coding/test/PCMFile.h"
+#include "webrtc/modules/audio_coding/test/utility.h"
 #include "webrtc/test/testsupport/fileutils.h"
 
 namespace webrtc {