Removes dependency on v8 from dartc testing

compiler/javatests/com/google/dart/corelib/SharedTests.java

Index: compiler/javatests/com/google/dart/corelib/SharedTests.java
diff --git a/compiler/javatests/com/google/dart/corelib/SharedTests.java b/compiler/javatests/com/google/dart/corelib/SharedTests.java
index 3dc32203c827eee90ccd926cf06a9998028c0986..c32337ab2b288ab3bd0c70b81c28b907970f76b1 100644
--- a/compiler/javatests/com/google/dart/corelib/SharedTests.java
+++ b/compiler/javatests/com/google/dart/corelib/SharedTests.java
@@ -6,7 +6,6 @@ package com.google.dart.corelib;
 
 import com.google.common.io.CharStreams;
 import com.google.common.io.LineReader;
-import com.google.dart.runner.V8Launcher;
 
 import junit.extensions.TestSetup;
 import junit.framework.Test;
@@ -50,12 +49,6 @@ public class SharedTests extends TestSetup {
   protected static class SuiteBuilder {
     protected TestSuite buildSuite() {
       TestSuite suite = new TestSuite("Shared Dart tests");
-
-      if (!V8Launcher.isConfigured()) {
-        return configurationProblem(suite,
-                                    "Please set the system property com.google.dart.runner.d8");
-      }
-
       File file = new File(listTests[0]);
       if (!file.canExecute()) {
         return configurationProblem(suite, file.getPath() + " is not executable");