Remove dartc optimizing backend.

dart/compiler/javatests/com/google/dart/compiler/end2end/MainMethodOptTest.java

Index: dart/compiler/javatests/com/google/dart/compiler/end2end/MainMethodOptTest.java
diff --git a/dart/compiler/javatests/com/google/dart/compiler/end2end/MainMethodOptTest.java b/dart/compiler/javatests/com/google/dart/compiler/end2end/MainMethodOptTest.java
deleted file mode 100644
index c395dfa3b5261eac2d33041249f695647a6ae0cd..0000000000000000000000000000000000000000
--- a/dart/compiler/javatests/com/google/dart/compiler/end2end/MainMethodOptTest.java
+++ /dev/null
@@ -1,17 +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.end2end;
-
-import java.util.List;
-
-/**
- * Optimized version of {@link MainMethodTest}.
- */
-public class MainMethodOptTest extends MainMethodTest {
-
-  protected void runTest(List<String> srcs) throws Exception {
-    runTest(srcs, OptimizationLevel.APP);
-  }
-}