Strip Interface class of most of its logic, make it all about Module exports

src/runtime/runtime-scopes.cc

Index: src/runtime/runtime-scopes.cc
diff --git a/src/runtime/runtime-scopes.cc b/src/runtime/runtime-scopes.cc
index b1c0fe33d95bba15b70810b8b9e7ab13b068555b..e133b65771de3c31f98099667f151c8e03691393 100644
--- a/src/runtime/runtime-scopes.cc
+++ b/src/runtime/runtime-scopes.cc
@@ -752,13 +752,6 @@ RUNTIME_FUNCTION(Runtime_DeclareModules) {
           USE(result);
           break;
         }
-        case MODULE: {
-          Object* referenced_context = Context::cast(host_context)->get(index);
-          Handle<JSModule> value(Context::cast(referenced_context)->module());
-          JSObject::SetOwnPropertyIgnoreAttributes(module, name, value, FROZEN)
-              .Assert();
-          break;
-        }
         case INTERNAL:
         case TEMPORARY:
         case DYNAMIC: