Switching Native MIDI API to an "opaque pointers" model.

Test: manual

Change-Id: Ic181008427e6e81106d867cc3a70deef8c591841
diff --git a/media/native/midi/Android.mk b/media/native/midi/Android.mk
index b91c430..dbc5eed 100644
--- a/media/native/midi/Android.mk
+++ b/media/native/midi/Android.mk
@@ -4,9 +4,7 @@
 
 LOCAL_SRC_FILES := \
 	../../java/android/media/midi/IMidiDeviceServer.aidl \
-	midi.cpp \
-	MidiDeviceRegistry.cpp \
-	MidiPortRegistry.cpp
+	midi.cpp
 
 LOCAL_AIDL_INCLUDES := \
 	$(FRAMEWORKS_BASE_JAVA_SRC_DIRS) \