Revert "Disable shared method memory optimization."

This reverts commit 9f466bd54aa6a6c0f12b2a6ccf4d19bc987bcf04.

We should now have better boot image profiles.

Bug: 225466002
Test: m
Change-Id: I4f98d7e066db880af8fb4d644abb1ef7befa4d66
diff --git a/runtime/art_method.h b/runtime/art_method.h
index c2de718..d8bd380 100644
--- a/runtime/art_method.h
+++ b/runtime/art_method.h
@@ -259,9 +259,7 @@
   }
 
   void SetMemorySharedMethod() REQUIRES_SHARED(Locks::mutator_lock_) {
-    // Disable until we make sure critical code is AOTed.
-    static constexpr bool kEnabledMemorySharedMethod = false;
-    if (kEnabledMemorySharedMethod && !IsIntrinsic() && !IsAbstract()) {
+    if (!IsIntrinsic() && !IsAbstract()) {
       AddAccessFlags(kAccMemorySharedMethod);
       SetHotCounter();
     }