Deleted deprecated profile func and profile.dart (#57841)

packages/flutter/lib/foundation.dart

@@ -52,7 +52,6 @@ export 'src/foundation/object.dart';
 export 'src/foundation/observer_list.dart';
 export 'src/foundation/platform.dart';
 export 'src/foundation/print.dart';
-export 'src/foundation/profile.dart';
 export 'src/foundation/serialization.dart';
 export 'src/foundation/stack_frame.dart';
 export 'src/foundation/synchronous_future.dart';

packages/flutter/lib/src/foundation/profile.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'basic_types.dart';
-import 'constants.dart';
-
-/// DEPRECATED. `function` cannot be tree-shaken out of release builds.
-///
-/// Instead use:
-///
-/// ```dart
-/// if (!kReleaseMode) {
-///   function();
-/// }
-/// ```
-@Deprecated(
-  'Use `if (!kReleaseMode) { function(); }` instead. '
-  'This feature was deprecated after v1.3.9.'
-)
-void profile(VoidCallback function) {
-  if (kReleaseMode)
-    return;
-  function();
-}

packages/flutter/test/foundation/profile_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter/foundation.dart';
-import '../flutter_test_alternative.dart';
-
-void main() {
-  // TODO(devoncarew): This test - while very nice - isn't testing what we really want to know:
-  // that the code in the `profile` closure is omitted in release mode.
-  test('profile invokes its closure in debug or profile mode', () {
-    int count = 0;
-    profile(() { // ignore: deprecated_member_use_from_same_package
-      count++;
-    });
-    // We run our tests in debug mode, so kReleaseMode will always evaluate to
-    // false...
-    expect(count, kReleaseMode ? 0 : 1);
-  });
-}