Remove unnecessary hide clauses

pkg/analyzer/test/source/embedder_test.dart

 // 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.
 
 @deprecated
 library analyzer.test.source.embedder_test;
 
-import 'dart:core' hide Resource;
+import 'dart:core';
 
 import 'package:analyzer/source/embedder.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:unittest/unittest.dart';
 
 import '../embedder_tests.dart';
 import '../reflective_tests.dart';
 import '../resource_utils.dart';
 
@@ skipping 137 matching lines @@
       expect(restoreUri.scheme, split[0]);
       expect(restoreUri.path, split[1]);
     }
 
     expectRestore('dart:deep');
     expectRestore('dart:deep/file.dart', 'dart:deep');
     expectRestore('dart:deep/part.dart');
     expectRestore('dart:deep/deep/file.dart');
   }
 }