Cleanup deferred test fixes.

tests/compiler/dart2js_extra/deferred/deferred_function_test.dart

Index: tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
diff --git a/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart b/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
index c19a4534b48ef6af064a9e3af738ce77814d66e4..c5980fb6c18a1e4aa546635cca4a40621bc9d33b 100644
--- a/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
+++ b/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
@@ -5,6 +5,7 @@
 // Test that loading of a library (with top-level functions only) can
 // be deferred.
 
+import "package:expect/expect.dart";
 import 'dart:async';
 @lazy import 'deferred_function_library.dart';
 
@@ -12,27 +13,6 @@ const lazy = const DeferredLibrary('deferred_function_library');
 
 isNoSuchMethodError(e) => e is NoSuchMethodError;
 
-class Expect {
-  static void isTrue(x) => Expect.equals(true, x);
-
-  static void isFalse(x) => Expect.equals(false, x);
-
-  static void equals(expected, actual) {
-    if (expected != actual) {
-      throw "Not equal. Expected: $expected. Got: $actual";
-    }
-  }
-  static void throws(fun, [test]) {
-    try {
-      fun();
-    } catch (e) {
-      if (!test(e)) throw "doesn't satisfy exception test";
-      return;
-    }
-    throw "didn't throw";
-  }
-}
-
 main() {
   print('unittest-suite-wait-for-done');