modules/audio_coding: Remove some codec include dirs

webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h

 /*
  *  Copyright (c) 2011 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 WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_MAIN_INCLUDE_PCM16B_H_
-#define WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_MAIN_INCLUDE_PCM16B_H_
+#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_PCM16B_H_
+#define WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_PCM16B_H_
 /*
  * Define the fixpoint numeric formats
  */
 
 #include <stddef.h>
 
 #include "webrtc/typedefs.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ skipping 35 matching lines @@
  */
 
 size_t WebRtcPcm16b_Decode(const uint8_t* encoded,
                            size_t len,
                            int16_t* speech);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* PCM16B */
+#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_PCM16B_H_ */