Revert "Move `analyzer_cli` into the SDK."

pkg/analyzer_cli/test/strong_mode_test.dart

Index: pkg/analyzer_cli/test/strong_mode_test.dart
diff --git a/pkg/analyzer_cli/test/strong_mode_test.dart b/pkg/analyzer_cli/test/strong_mode_test.dart
deleted file mode 100644
index 926452c620297ee847ee648be4fc40771867afc6..0000000000000000000000000000000000000000
--- a/pkg/analyzer_cli/test/strong_mode_test.dart
+++ /dev/null
@@ -1,53 +0,0 @@
-// 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.
-
-@TestOn("vm")
-library analyzer_cli.test.strong_mode;
-
-import 'dart:io';
-
-import 'package:analyzer_cli/src/driver.dart' show Driver, errorSink, outSink;
-import 'package:path/path.dart' as path;
-import 'package:test/test.dart';
-
-import 'driver_test.dart';
-import 'utils.dart';
-
-/// End-to-end test for --strong checking.
-///
-/// Most strong mode tests are in Analyzer, but this verifies the option is
-/// working and producing extra errors as expected.
-///
-/// Generally we don't want a lot of cases here as it requires spinning up a
-/// full analysis context.
-void main() {
-  group('--strong', () {
-    StringSink savedOutSink, savedErrorSink;
-    int savedExitCode;
-    setUp(() {
-      savedOutSink = outSink;
-      savedErrorSink = errorSink;
-      savedExitCode = exitCode;
-      outSink = new StringBuffer();
-      errorSink = new StringBuffer();
-    });
-    tearDown(() {
-      outSink = savedOutSink;
-      errorSink = savedErrorSink;
-      exitCode = savedExitCode;
-    });
-
-    test('produces stricter errors', () async {
-      var testPath = path.join(testDirectory, 'data/strong_example.dart');
-      new Driver().start(['--options', emptyOptionsFile, '--strong', testPath]);
-
-      expect(exitCode, 3);
-      var stdout = outSink.toString();
-      expect(stdout, contains('[error] Invalid override'));
-      expect(stdout, contains('[error] Type check failed'));
-      expect(stdout, contains('2 errors found.'));
-      expect(errorSink.toString(), '');
-    });
-  });
-}