[modules] Remove @@iterator on namespace objects.

src/ast/ast-types.cc

Index: src/ast/ast-types.cc
diff --git a/src/ast/ast-types.cc b/src/ast/ast-types.cc
index bb50a15f01f72a69aaa1ed0343d670d10fd20db7..807aff58c4e6553ba9d0c4bf16c582ae11c0c543 100644
--- a/src/ast/ast-types.cc
+++ b/src/ast/ast-types.cc
@@ -209,7 +209,6 @@ AstType::bitset AstBitsetType::Lub(i::Map* map) {
     case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
     case JS_GENERATOR_OBJECT_TYPE:
     case JS_MODULE_NAMESPACE_TYPE:
-    case JS_FIXED_ARRAY_ITERATOR_TYPE:
     case JS_ARRAY_BUFFER_TYPE:
     case JS_ARRAY_TYPE:
     case JS_REGEXP_TYPE:  // TODO(rossberg): there should be a RegExp type.