Do not emit stubName for static functions.

pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
index 394a1ca4953f710905436247517ee03df3828cee..bd070c738c1bc19c50e829e74561d2ad0acb049b 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
@@ -117,10 +117,6 @@ class ContainerBuilder extends CodeEmitterHelper {
       expressions.add(stub.code);
       if (member.isInstanceMember) {
         expressions.add(js.string(invocationName));
-      } else {
-        // TOOD(floitsch): Since we know when reading static data versus
-        // instance data, we can eliminate this element.
-        expressions.add(js('null'));
       }
       String callName = stub.callName;
       String callSelectorString = (callName == null) ? 'null' : '"$callName"';