Removes dependency on v8 from dartc testing

compiler/javatests/com/google/dart/runner/DartRunnerTest.java

-// 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.runner;
-
-import junit.framework.TestCase;
-
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-
-public class DartRunnerTest extends TestCase {
-  public void testMain() throws Throwable {
-    try {
-      PrintStream stream = new PrintStream(new ByteArrayOutputStream());
-      DartRunner.throwingMain("NoSuchFile.dart".split(" "), stream, stream);
-      fail("Expected a compilation failure.");
-    } catch (RunnerError e) {
-      // Expected this exception.
-    }
-  }
-}