Remove HOST_PREFER_32_BIT

HOST_PREFER_32_BIT was used during the switch to 64-bit host tools to
keep the SDK building as 32-bit, but is never set any more.

Change-Id: I874f89c7d1e9cd8c9d4c879048d81a4362ce4dce
diff --git a/core/executable_prefer_symlink.mk b/core/executable_prefer_symlink.mk
index e59e8c2..9b9814e 100644
--- a/core/executable_prefer_symlink.mk
+++ b/core/executable_prefer_symlink.mk
@@ -33,11 +33,7 @@
   endif
 else
   my_symlink := $(addprefix $(HOST_OUT)/bin/, $(LOCAL_MODULE))
-  ifneq ($(HOST_PREFER_32_BIT),true)
-    my_src_binary_name := $(LOCAL_MODULE_STEM_64)
-  else
-    my_src_binary_name := $(LOCAL_MODULE_STEM_32)
-  endif
+  my_src_binary_name := $(LOCAL_MODULE_STEM_64)
 endif
 
 $(call symlink-file,$(my_module_path)/$(my_src_binary_name),$(my_src_binary_name),$(my_symlink))