Delete support for source mirrors

tests/compiler/dart2js/strip_comment_test.dart

-// Copyright (c) 2013, 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 strip_comment_test;
-
-import "package:expect/expect.dart";
-import 'package:compiler/src/mirrors/mirrors_util.dart';
-
-testComment(String strippedText, String commentText) {
-  Expect.stringEquals(strippedText, stripComment(commentText));
-}
-
-void main() {
-  testComment('', '//');
-  testComment('', '// ');
-  testComment(' ', '//  ');
-  testComment('foo bar baz', '//foo bar baz');
-  testComment('foo bar baz', '// foo bar baz');
-  testComment('foo bar baz ', '// foo bar baz ');
-  testComment(' foo bar baz  ', '//  foo bar baz  ');
-
-  testComment('', '///');
-  testComment('', '/// ');
-  testComment(' ', '///  ');
-  testComment('foo bar baz', '///foo bar baz');
-  testComment('foo bar baz', '/// foo bar baz');
-  testComment('foo bar baz ', '/// foo bar baz ');
-  testComment(' foo bar baz  ', '///  foo bar baz  ');
-
-  testComment('', '/**/');
-  testComment('', '/* */');
-  testComment(' ', '/*  */');
-  testComment('foo bar baz', '/*foo bar baz*/');
-  testComment('foo bar baz', '/* foo bar baz*/');
-  testComment('foo bar baz ', '/* foo bar baz */');
-  testComment(' foo bar baz  ', '/*  foo bar baz  */');
-  testComment('foo\nbar\nbaz', '/*foo\nbar\nbaz*/');
-  testComment('foo\nbar\nbaz', '/* foo\nbar\nbaz*/');
-  testComment('foo \n bar \n baz ', '/* foo \n bar \n baz */');
-  testComment('foo\nbar\nbaz', '/* foo\n *bar\n *baz*/');
-  testComment('foo\nbar\nbaz', '/* foo\n * bar\n * baz*/');
-  testComment('foo \nbar \nbaz ', '/* foo \n * bar \n * baz */');
-  testComment('\nfoo\nbar\nbaz',
-      '''/*
-          * foo
-          * bar
-          * baz*/''');
-  testComment('\nfoo\nbar\nbaz\n',
-      '''/*
-          * foo
-          * bar
-          * baz
-          */''');
-
-  testComment('', '/***/');
-  testComment('', '/** */');
-  testComment(' ', '/**  */');
-  testComment('foo bar baz', '/**foo bar baz*/');
-  testComment('foo bar baz', '/** foo bar baz*/');
-  testComment('foo bar baz ', '/** foo bar baz */');
-  testComment(' foo bar baz  ', '/**  foo bar baz  */');
-  testComment('foo\nbar\nbaz', '/**foo\nbar\nbaz*/');
-  testComment('foo\nbar\nbaz', '/** foo\nbar\nbaz*/');
-  testComment('foo \n bar \n baz ', '/** foo \n bar \n baz */');
-  testComment('foo\nbar\nbaz', '/** foo\n *bar\n *baz*/');
-  testComment('foo\nbar\nbaz', '/** foo\n * bar\n * baz*/');
-  testComment('foo \nbar \nbaz ', '/** foo \n * bar \n * baz */');
-  testComment('\nfoo\nbar\nbaz',
-      '''/**
-          * foo
-          * bar
-          * baz*/''');
-  testComment('\nfoo\nbar\nbaz\n',
-      '''/**
-          * foo
-          * bar
-          * baz
-          */''');
-}