removed TARGET_USES_AOSP_FOR_AUDIO flag from msmnile_au.mk

The flag should be set in device mk

Change-Id: I13636f414a55189363067d163221da6390be9a22
diff --git a/configs/msmnile_au/msmnile_au.mk b/configs/msmnile_au/msmnile_au.mk
index c9d5d96..5a7366f 100644
--- a/configs/msmnile_au/msmnile_au.mk
+++ b/configs/msmnile_au/msmnile_au.mk
@@ -2,7 +2,6 @@
 #
 #AUDIO_FEATURE_FLAGS
 BOARD_USES_ALSA_AUDIO := true
-TARGET_USES_AOSP_FOR_AUDIO := false
 
 ifneq ($(TARGET_USES_AOSP_FOR_AUDIO), true)
 USE_CUSTOM_AUDIO_POLICY := 1