VM: Restore old implementation of ClassID.cid* fields

runtime/lib/class_id.cc

Index: runtime/lib/class_id.cc
diff --git a/runtime/lib/class_id.cc b/runtime/lib/class_id.cc
index c950b0edd22e9128f893da29b1a7857b1dab943a..2d9f67d3defa7e0f00e1046d9dda4117b79b61a8 100644
--- a/runtime/lib/class_id.cc
+++ b/runtime/lib/class_id.cc
@@ -13,24 +13,4 @@ DEFINE_NATIVE_ENTRY(ClassID_getID, 1) {
   return Smi::New(instance.GetClassId());
 }
 
-
-DEFINE_NATIVE_ENTRY(ClassID_byName, 1) {
-  GET_NON_NULL_NATIVE_ARGUMENT(String, name, arguments->NativeArgAt(0));
-
-#define CLASS_LIST_WITH_NULL(V)                                                \
-  V(Null)                                                                      \
-  CLASS_LIST_NO_OBJECT(V)
-
-#define COMPARE(clazz)                                                         \
-  if (name.Equals(#clazz)) return Smi::New(k##clazz##Cid);
-
-  CLASS_LIST_WITH_NULL(COMPARE)
-
-#undef COMPARE
-#undef CLASS_LIST_WITH_NULL
-
-  UNREACHABLE();
-  return Smi::New(-1);
-}
-
 }  // namespace dart