Fix dart2js analyze _api_test for dart:io

tests/compiler/dart2js/analyze_api_test.dart

Index: tests/compiler/dart2js/analyze_api_test.dart
diff --git a/tests/compiler/dart2js/analyze_api_test.dart b/tests/compiler/dart2js/analyze_api_test.dart
index e3d2642759b205cce5f353854b729dd34c186e89..1432d40eea9d4976e1453511311518a2c9a00a5c 100644
--- a/tests/compiler/dart2js/analyze_api_test.dart
+++ b/tests/compiler/dart2js/analyze_api_test.dart
@@ -25,11 +25,7 @@ import '../../../sdk/lib/_internal/libraries.dart';
  */
 // TODO(johnniwinther): Support canonical URIs as keys and message kinds as
 // values.
-const Map<String,List<String>> WHITE_LIST = const {
-  'io/http_impl.dart': const ['Warning: no method named'], // Issue 8394.
-  'io/http_headers.dart': const ['Warning: no method named'], // Issue 8394.
-  'io/timer_impl.dart': const ['Warning: no method named'], // Issue 8394.
-};
+const Map<String,List<String>> WHITE_LIST = const { };
 
 class CollectingDiagnosticHandler extends FormattingDiagnosticHandler {
   bool hasWarnings = false;