Revert "Hide unwinder symbols in each binary."

This reverts commit dc30a16ba27c4a0de388696869cd1c518ecb3f3a.

Change-Id: Ib6af148bcaa3041b3040e525442a39b493852794
diff --git a/core/cxx_stl_setup.mk b/core/cxx_stl_setup.mk
index 3941edf..c59cd34 100644
--- a/core/cxx_stl_setup.mk
+++ b/core/cxx_stl_setup.mk
@@ -70,7 +70,6 @@
     else
         ifeq (arm,$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH))
             my_static_libraries += libunwind_llvm
-            my_ldflags += -Wl,--exclude-libs,libunwind_llvm.a
         endif
 
         ifeq ($(my_link_type),static)