Remove enforceFrameCount

It was only used to decide whether to issue a warning.
The warning was issued the first time track was created but
not at re-creation.  Now it is a verbose message every time,
not a warning since it happens all the time with key clicks on A2DP.

Change-Id: I9d39f53c0a7eb84b666e55b1b76ff830cf8f37ba
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index ad27a1e..7d5d772 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -476,8 +476,7 @@
                                  int frameCount,
                                  audio_policy_output_flags_t flags,
                                  const sp<IMemory>& sharedBuffer,
-                                 audio_io_handle_t output,
-                                 bool enforceFrameCount);
+                                 audio_io_handle_t output);
             void flush_l();
             status_t setLoop_l(uint32_t loopStart, uint32_t loopEnd, int loopCount);
             audio_io_handle_t getOutput_l();