Revert "Temporary disable linker-namespaces"

This reverts commit 9aefb12cc91eb459d87392700f1199ee07580cd6.

Change-Id: Iac567c03699d65f97c380c2f32ef5a2a56d44721
diff --git a/runtime/native/java_lang_Runtime.cc b/runtime/native/java_lang_Runtime.cc
index f42a17d..c177f19 100644
--- a/runtime/native/java_lang_Runtime.cc
+++ b/runtime/native/java_lang_Runtime.cc
@@ -80,7 +80,7 @@
   // Starting with N nativeLoad uses classloader local
   // linker namespace instead of global LD_LIBRARY_PATH
   // (23 is Marshmallow)
-  if (target_sdk_version <= INT_MAX) {
+  if (target_sdk_version == 0) {
     SetLdLibraryPath(env, javaLibrarySearchPath);
   }