Remove libunwind_llvm dependency because we are picking up the wrong unwind.h.

Bug: http://b/26987366
Change-Id: I91c64450cae42334e9d4aa2f5ce96d40d10a4986
diff --git a/Android.mk b/Android.mk
index b1df945..693ac44 100644
--- a/Android.mk
+++ b/Android.mk
@@ -395,7 +395,6 @@
 LOCAL_CXX_STL := none
 
 # These don't actually link, but are required to get exported headers
-LOCAL_STATIC_LIBRARIES_arm := libunwind_llvm
 LOCAL_STATIC_LIBRARIES_arm64 := libunwindbacktrace
 LOCAL_STATIC_LIBRARIES_mips := libunwindbacktrace
 LOCAL_STATIC_LIBRARIES_mips64 := libunwindbacktrace