Fix bots. I missed deleting another file.

tests/utils/source_mirrors_test.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-// VMOptions=
-// VMOptions=--print-object-histogram
-
-// Smoke test of the dart2js compiler API.
-library source_mirrors_test;
-
-import 'dart:async';
-import "package:async_helper/async_helper.dart";
-
-import 'package:compiler/src/mirrors/analyze.dart';
-import 'dummy_compiler_test.dart';
-
-main() {
-  asyncStart();
-  Future result =
-      analyze([new Uri(scheme: 'main')],
-              new Uri(scheme: 'lib', path: '/'),
-              new Uri(scheme: 'package', path: '/'),
-              provider, handler);
-  result.then((mirrorSystem) {
-    if (mirrorSystem == null) {
-      throw 'Analysis failed';
-    }
-    mirrorSystem.libraries.forEach((uri, library) {
-      print(library);
-      library.declarations.forEach((name, declaration) {
-        print(' $name:$declaration');
-      });
-    });
-  }, onError: (e, s) {
-      throw 'Analysis failed: $e\n$s';
-  }).then(asyncSuccess);
-}