dart2js: Remove unused function in new emitter.

sdk/lib/_internal/compiler/implementation/js_emitter/program_builder.dart

Index: sdk/lib/_internal/compiler/implementation/js_emitter/program_builder.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_emitter/program_builder.dart b/sdk/lib/_internal/compiler/implementation/js_emitter/program_builder.dart
index e642327b84accb8799e9a0af22a6e430b7686c42..1702ad6c29004da29a9ec1fe06a1e2c602401aa0 100644
--- a/sdk/lib/_internal/compiler/implementation/js_emitter/program_builder.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_emitter/program_builder.dart
@@ -161,16 +161,6 @@ class ProgramBuilder {
                            isFinal, isLazy);
   }
 
-  List<StaticField> _buildStaticLazilyInitializedFields(Fragment fragment) {
-    JavaScriptConstantCompiler handler = backend.constants;
-    List<VariableElement> lazyFields =
-        handler.getLazilyInitializedFieldsForEmission();
-    // TODO(floitsch): handle static lazy finals correctly with deferred
-    // libraries.
-    if (fragment != _registry.mainFragment) return const <StaticField>[];
-    throw new UnimplementedError("lazy statics");
-  }
-
   List<Library> _buildLibraries(Fragment fragment) {
     List<Library> libraries = new List<Library>(fragment.length);
     int count = 0;