Remove (TARGET|HOST)_NO_UNDEFINED_LDFLAGS

We never use it for host modules, and all the target configurations use
the same linker argument. This matches Soong.

Change-Id: Ibcba9a4ce340c7a12306d1fee620a04027c0e292
diff --git a/core/binary.mk b/core/binary.mk
index ca589bf..1ef55b3 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -493,7 +493,7 @@
 # up if --no-undefined is passed to the linker.
 ifeq ($(strip $(LOCAL_NO_DEFAULT_COMPILER_FLAGS)),)
 ifeq ($(my_allow_undefined_symbols),)
-  my_ldflags +=  $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)NO_UNDEFINED_LDFLAGS)
+  my_ldflags += -Wl,--no-undefined
 endif
 endif