audio: qahw: Remove LOCAL_PROPRIETARY_MODULE flag

-Remove LOCAL_PROPRIETARY_MODULE as qahw is distributed
 as opensource

Change-Id: Idcc39d7f87d4e51a8ad25955f522a26b930330dc
diff --git a/qahw_api/Android.mk b/qahw_api/Android.mk
index 3c02f51..8c99c5b 100644
--- a/qahw_api/Android.mk
+++ b/qahw_api/Android.mk
@@ -24,7 +24,6 @@
 LOCAL_COPY_HEADERS      += inc/qahw_defs.h
 
 LOCAL_PRELINK_MODULE    := false
-LOCAL_PROPRIETARY_MODULE := true
 
 include $(BUILD_SHARED_LIBRARY)