Revert "Introduce the "Embedded" category."

tests/compiler/dart2js/categories_test.dart

Index: tests/compiler/dart2js/categories_test.dart
diff --git a/tests/compiler/dart2js/categories_test.dart b/tests/compiler/dart2js/categories_test.dart
deleted file mode 100644
index 3b22453112ca073a27266c86ad772165cf6b10ed..0000000000000000000000000000000000000000
--- a/tests/compiler/dart2js/categories_test.dart
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (c) 2015, 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.
-
-import "package:expect/expect.dart";
-import 'package:async_helper/async_helper.dart';
-
-import "memory_compiler.dart";
-
-runTest(String source, String categories, int expectedErrors) async {
-  var collector = new DiagnosticCollector();
-  await runCompiler(
-      memorySourceFiles: {"main.dart": source},
-      options: ["--categories=$categories"],
-      diagnosticHandler: collector);
-  Expect.equals(expectedErrors, collector.errors.length);
-  Expect.equals(0, collector.warnings.length);
-}
-
-void main() {
-  asyncTest(() async {
-    await runTest("import 'dart:async'; main() {}", "Embedded", 1);
-    await runTest("import 'dart:async'; main() {}", "Client", 0);
-    await runTest("import 'dart:async'; main() {}", "Server", 0);
-    await runTest("import 'dart:html'; main() {}", "Embedded", 1);
-    await runTest("import 'dart:html'; main() {}", "Client", 0);
-    await runTest("import 'dart:html'; main() {}", "Server", 1);
-    await runTest("import 'dart:io'; main() {}", "Embedded", 1);
-    await runTest("import 'dart:io'; main() {}", "Client", 1);
-    await runTest("import 'dart:io'; main() {}", "Server", 0);
-    await runTest("import 'dart:_internal'; main() {}", "Embedded", 2);
-    await runTest("import 'dart:_internal'; main() {}", "Client", 2);
-    await runTest("import 'dart:_internal'; main() {}", "Server", 2);
-  });
-}