Move libldnhncr to libc++.

Bug: 15193147
Change-Id: If59c4a53a497f501881d26d58b80b11371906527
diff --git a/media/libeffects/loudness/Android.mk b/media/libeffects/loudness/Android.mk
index 70d7984..55d0611 100644
--- a/media/libeffects/loudness/Android.mk
+++ b/media/libeffects/loudness/Android.mk
@@ -19,5 +19,4 @@
 LOCAL_C_INCLUDES := \
 	$(call include-path-for, audio-effects) \
 
-include external/stlport/libstlport.mk
 include $(BUILD_SHARED_LIBRARY)