Removed unused fields in AudioRecord::Buffer

Change-Id: I89fc6d8f695b48516d956b0a9a4a43d408f369f9
diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index f9f6e8d..0ab26b8 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -57,13 +57,6 @@
     class Buffer
     {
     public:
-        enum {
-            MUTE    = 0x00000001
-        };
-        uint32_t    flags;
-        int         channelCount;
-        audio_format_t format;
-
         size_t      frameCount;     // number of sample frames corresponding to size;
                                     // on input it is the number of frames available,
                                     // on output is the number of frames actually drained
diff --git a/media/libmedia/AudioRecord.cpp b/media/libmedia/AudioRecord.cpp
index bd558fa..3c28ca7 100644
--- a/media/libmedia/AudioRecord.cpp
+++ b/media/libmedia/AudioRecord.cpp
@@ -560,9 +560,6 @@
         framesReq = bufferEnd - u;
     }
 
-    audioBuffer->flags       = 0;
-    audioBuffer->channelCount= mChannelCount;
-    audioBuffer->format      = mFormat;
     audioBuffer->frameCount  = framesReq;
     audioBuffer->size        = framesReq*cblk->frameSize;
     audioBuffer->raw         = (int8_t*)cblk->buffer(u);