Remove dartc optimizing backend.

dart/compiler/javatests/com/google/dart/compiler/vm/ImportedDartOptTest.java

Index: dart/compiler/javatests/com/google/dart/compiler/vm/ImportedDartOptTest.java
diff --git a/dart/compiler/javatests/com/google/dart/compiler/vm/ImportedDartOptTest.java b/dart/compiler/javatests/com/google/dart/compiler/vm/ImportedDartOptTest.java
deleted file mode 100644
index c21ab1b64b066f02f574b7e5a8a8507ba8e5ed3a..0000000000000000000000000000000000000000
--- a/dart/compiler/javatests/com/google/dart/compiler/vm/ImportedDartOptTest.java
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2011, 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.
-
-package com.google.dart.compiler.vm;
-
-public class ImportedDartOptTest extends ImportedDartTests {
-
-  @Override
-  protected void runNegativeTest(String testName, String... commandArray) {
-    super.runNegativeTest(testName, addOptimizeOption(commandArray));
-  }
-
-  @Override
-  protected void runPositiveTest(String testName, String... commandArray) throws Throwable {
-    super.runPositiveTest(testName, addOptimizeOption(commandArray));
-  }
-
-  // If necessary, tests expectations can be overridden here, like so:
-  //   public void testUnhandledExceptionNegativeTest() {
-  //     // TODO(johnlenz): http://b/4484716
-  //   }
-}