Fix build by removing external/icu4c from build.

Change-Id: I24bc381dbc32d09d16354efdde80dc65df9741f1
diff --git a/Android.mk b/Android.mk
index 61595ff..d18a5b4 100644
--- a/Android.mk
+++ b/Android.mk
@@ -25,4 +25,4 @@
 		stubdata \
 	))
 
-include $(subdirs)
+#include $(subdirs)