Remove special visibility setting for com.android.art.

All the special treatment for it in libnativeloader has been cleaned
up. Instead propagate the standard logic that may make it visible.

Test: system/linkerconfig/rundiff.sh
Test: Boot
Test: ART chroot run tests
Bug: 147082642
Change-Id: I69bfcfdef05bed723915679221ca87f78d0e95c8
diff --git a/contents/section/apexart.cc b/contents/section/apexart.cc
index 437ec68..289af0a 100644
--- a/contents/section/apexart.cc
+++ b/contents/section/apexart.cc
@@ -36,7 +36,7 @@
 
   namespaces.emplace_back(BuildApexArtDefaultNamespace(ctx, apex_info));
   namespaces.emplace_back(BuildApexPlatformNamespace(ctx));
-  namespaces.emplace_back(BuildArtNamespace(ctx, apex_info));
+  namespaces.emplace_back(BuildArtNamespace(ctx, apex_info, false));
 
   std::set<std::string> visible_apexes;