Remove hardcoded ICU include paths.
ICU exports them using LOCAL_EXPORT_C_INCLUDE_DIRS.
https://android-review.googlesource.com/#/c/121311/
diff --git a/Android.mk b/Android.mk
index 07dfa5b..0552507 100644
--- a/Android.mk
+++ b/Android.mk
@@ -99,8 +99,7 @@
libutils \
liblog
LOCAL_C_INCLUDES += \
- $(LOCAL_PATH)/src \
- external/icu/icu4c/source/common
+ $(LOCAL_PATH)/src
LOCAL_CFLAGS += -DHB_NO_MT -DHAVE_OT -DHAVE_ICU -DHAVE_ICU_BUILTIN
LOCAL_MODULE:= libharfbuzz_ng
include $(BUILD_SHARED_LIBRARY)