Revert^2 "Remove ART APEX from the bootstrap apexes"

6d869dd6abb2dab2997ec8344948cffd8928521b

Change-Id: I24906b7520ae01e586687ae26fcf6d8b63d9978d
diff --git a/init/service.cpp b/init/service.cpp
index f6ce094..cfb8284 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -127,8 +127,7 @@
 
 static bool AreRuntimeApexesReady() {
     struct stat buf;
-    return stat("/apex/com.android.art/", &buf) == 0 &&
-           stat("/apex/com.android.runtime/", &buf) == 0;
+    return stat("/apex/com.android.runtime/", &buf) == 0;
 }
 
 unsigned long Service::next_start_order_ = 1;