Remove TimedAudioTrack and associated code

Bug: 8278435
Change-Id: I095c1a4888e645e14d93b0b15fbef4524a831ca1
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 5051aff..3b69ecf 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -47,7 +47,8 @@
     // or-able bits shared by createTrack and openRecord, but not all combinations make sense
     enum {
         TRACK_DEFAULT = 0,  // client requests a default AudioTrack
-        TRACK_TIMED   = 1,  // client requests a TimedAudioTrack
+        // FIXME: obsolete
+        // TRACK_TIMED= 1,  // client requests a TimedAudioTrack
         TRACK_FAST    = 2,  // client requests a fast AudioTrack or AudioRecord
         TRACK_OFFLOAD = 4,  // client requests offload to hw codec
         TRACK_DIRECT = 8,   // client requests a direct output