Revert "Towards compiling Hello World!" and "Compile and run Hello World!"

pkg/compiler/lib/src/js_emitter/native_emitter.dart

Index: pkg/compiler/lib/src/js_emitter/native_emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/native_emitter.dart b/pkg/compiler/lib/src/js_emitter/native_emitter.dart
index 70e3e359be04dcba3257859699f9afd3fd0ea040..a7f1562167280b97008f035ab02bbd483638a55c 100644
--- a/pkg/compiler/lib/src/js_emitter/native_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/native_emitter.dart
@@ -268,7 +268,7 @@ class NativeEmitter {
     FunctionEntity converter = _commonElements.closureConverter;
     jsAst.Expression closureConverter =
         _emitterTask.staticFunctionAccess(converter);
-    _worldBuilder.forEachParameter(member, (DartType type, String name, _) {
+    _worldBuilder.forEachParameter(member, (DartType type, String name) {
       // If [name] is not in [stubParameters], then the parameter is an optional
       // parameter that was not provided for this stub.
       for (jsAst.Parameter stubParameter in stubParameters) {