Remove obsolete references to libmedia

Change-Id: I65c10c2c6248a439d8ba6b3e9d540072fb25039f
diff --git a/audio/Android.mk b/audio/Android.mk
index 941869c..a69b9cd 100644
--- a/audio/Android.mk
+++ b/audio/Android.mk
@@ -42,9 +42,7 @@
 
 LOCAL_SHARED_LIBRARIES := \
     libcutils \
-    libutils \
-    libmedia \
-    libmedia_native
+    libutils
 
 LOCAL_STATIC_LIBRARIES := \
     libmedia_helper