Remove 'initializeTestEnvironment' from 'analyzer'.

pkg/analyzer/test/dart/ast/ast_test.dart

 // Copyright (c) 2014, 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.
 
 library analyzer.test.dart.ast.ast_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/src/dart/ast/token.dart';
 import 'package:analyzer/src/generated/testing/ast_factory.dart';
 import 'package:analyzer/src/generated/testing/token_factory.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../generated/parser_test.dart' show ParserTestCase;
 import '../../generated/test_support.dart';
-import '../../utils.dart';
 
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     defineReflectiveTests(ClassDeclarationTest);
     defineReflectiveTests(ClassTypeAliasTest);
     defineReflectiveTests(ConstructorDeclarationTest);
     defineReflectiveTests(FieldFormalParameterTest);
     defineReflectiveTests(IndexExpressionTest);
     defineReflectiveTests(MethodDeclarationTest);
     defineReflectiveTests(NodeListTest);
     defineReflectiveTests(SimpleIdentifierTest);
     defineReflectiveTests(SimpleStringLiteralTest);
@@ skipping 1198 matching lines @@
   final int ordinal;
 
   const _WrapperKind(this.name, this.ordinal);
 
   int get hashCode => ordinal;
 
   int compareTo(_WrapperKind other) => ordinal - other.ordinal;
 
   String toString() => name;
 }