am 48a941ce: Merge "Cleanup libbacktrace Android.mk"

* commit '48a941cee4a9ba07cb2ad69b9d2976060b2bde11':
  Cleanup libbacktrace Android.mk
diff --git a/libbacktrace/Android.mk b/libbacktrace/Android.mk
index f2f71f9..ca1e4bf 100755
--- a/libbacktrace/Android.mk
+++ b/libbacktrace/Android.mk
@@ -51,9 +51,6 @@
 	UnwindMap.cpp \
 	UnwindPtrace.cpp \
 
-libbacktrace_c_includes := \
-	external/libunwind/include \
-
 libbacktrace_shared_libraries := \
 	libunwind \
 	libunwind-ptrace \