Remove 'serializeLibrary(LibraryElement)' and its tests.

pkg/analyzer/test/src/summary/summarize_elements_strong_test.dart

Index: pkg/analyzer/test/src/summary/summarize_elements_strong_test.dart
diff --git a/pkg/analyzer/test/src/summary/summarize_elements_strong_test.dart b/pkg/analyzer/test/src/summary/summarize_elements_strong_test.dart
deleted file mode 100644
index ffa3cc03595109e46b868ebf54a193ed06b82e5f..0000000000000000000000000000000000000000
--- a/pkg/analyzer/test/src/summary/summarize_elements_strong_test.dart
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (c) 2016, 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.src.summary.summarize_elements_strong_test;
-
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/sdk.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-import 'package:unittest/unittest.dart';
-
-import '../context/abstract_context.dart';
-import 'summarize_elements_test.dart';
-import 'summary_common.dart';
-
-main() {
-  groupSep = ' | ';
-  defineReflectiveTests(SummarizeElementsStrongTest);
-}
-
-/**
- * Override of [SummaryTest] which creates summaries from the element model
- * using strong mode.
- */
-@reflectiveTest
-class SummarizeElementsStrongTest extends SummarizeElementsTest {
-  @override
-  AnalysisOptionsImpl get options => super.options..strongMode = true;
-
-  @override
-  bool get strongMode => true;
-
-  @override
-  DartSdk createDartSdk() => AbstractContextTest.SHARED_STRONG_MOCK_SDK;
-}