Revert "Ensure we fence the writing of clazz to an Object post allocation."

This reverts commit 821ab588af4566a800d4b5608092ccc1dd3764af.
diff --git a/vm/oo/Object.h b/vm/oo/Object.h
index 2f6fcaf..4e6103a 100644
--- a/vm/oo/Object.h
+++ b/vm/oo/Object.h
@@ -221,7 +221,7 @@
  * void DVM_OBJECT_INIT(Object *obj, ClassObject *clazz_)
  */
 #define DVM_OBJECT_INIT(obj, clazz_) \
-    dvmSetFieldObjectVolatile(obj, OFFSETOF_MEMBER(Object, clazz), clazz_)
+    dvmSetFieldObject(obj, OFFSETOF_MEMBER(Object, clazz), clazz_)
 
 /*
  * Data objects have an Object header followed by their instance data.