Remove dartdoc.

sdk/lib/_internal/dartdoc/test/dartdoc_search_test.dart

-// Copyright (c) 2012, 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 dartdoc_search_test;
-
-// TODO(rnystrom): Use "package:" URL (#4968).
-import '../../../../../pkg/expect/lib/expect.dart';
-import '../lib/src/dartdoc/nav.dart';
-import '../lib/src/client/search.dart';
-
-const String URL = 'dummy-url';
-
-testTopLevelVsMembers() {
-        var search = new SearchText('timer');
-        var match = obtainMatch(search, 'timer');
-        // Matching a top-level field 'timer';
-        var topLevelResult = new Result(match, FIELD, URL);
-        // Matching a member field 'timer' in 'Foo';
-        var memberResult = new Result(match, FIELD, URL, type: 'Foo');
-        Expect.equals(-1, resultComparator(topLevelResult, memberResult),
-                "Top level fields should be preferred to member fields");
-}
-
-testTopLevelFullVsPrefix() {
-        var search = new SearchText('cancel');
-        var fullMatch = obtainMatch(search, 'cancel');
-        var prefixMatch = obtainMatch(search, 'cancelable');
-        // Matching a top-level method 'cancel';
-        var fullResult = new Result(fullMatch, METHOD, URL);
-        // Matching a top-level method 'cancelable';
-        var prefixResult = new Result(prefixMatch, METHOD, URL);
-        Expect.equals(-1, resultComparator(fullResult, prefixResult),
-                "Full matches should be preferred to prefix matches");
-}
-
-testMemberFullVsPrefix() {
-        var search = new SearchText('cancel');
-        var fullMatch = obtainMatch(search, 'cancel');
-        var prefixMatch = obtainMatch(search, 'cancelable');
-        // Matching a member method 'cancel' in 'Isolate';
-        var fullResult = new Result(fullMatch, METHOD, URL, type: 'Isolate');
-        // Matching a member field 'cancelable' in 'Event';
-        var prefixResult = new Result(prefixMatch, FIELD, URL, type: 'Event');
-        Expect.equals(-1, resultComparator(fullResult, prefixResult),
-                "Full matches should be preferred to prefix matches");
-}
-
-void main() {
-        testTopLevelVsMembers();
-        testTopLevelFullVsPrefix();
-        testMemberFullVsPrefix();
-}