Remove all traces of ViewConfiguration/PlatformConfiguration (#121751)

Remove all traces of ViewConfiguration/PlatformConfiguration

packages/flutter/test/widgets/media_query_test.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' show Brightness, DisplayFeature, DisplayFeatureState, DisplayFeatureType, GestureSettings, PlatformDispatcher, ViewConfiguration, ViewPadding;
+import 'dart:ui' show Brightness, DisplayFeature, DisplayFeatureState, DisplayFeatureType, GestureSettings, PlatformDispatcher, ViewPadding;
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
@@ -1539,8 +1539,6 @@ class TestView implements FlutterView {
   @override
   final ViewPadding systemGestureInsets;
   @override
-  final ViewConfiguration viewConfiguration = const ViewConfiguration();
-  @override
   final List<DisplayFeature> displayFeatures = <DisplayFeature>[];
   @override
   final GestureSettings gestureSettings = const GestureSettings();

packages/flutter_test/lib/src/window.dart

@@ -460,16 +460,6 @@ class TestWindow implements ui.SingletonFlutterWindow {
     platformDispatcher.clearAccessibilityFeaturesTestValue();
   }
 
-  @override
-  ui.ViewConfiguration get viewConfiguration => _viewConfiguration ?? _window.viewConfiguration;
-  ui.ViewConfiguration? _viewConfiguration;
-
-  /// Hide the real view configuration and report the provided [value] instead.
-  set viewConfigurationTestValue(ui.ViewConfiguration? value) { // ignore: avoid_setters_without_getters
-    _viewConfiguration = value;
-    onMetricsChanged?.call();
-  }
-
   @override
   ui.VoidCallback? get onAccessibilityFeaturesChanged => platformDispatcher.onAccessibilityFeaturesChanged;
   @override
@@ -939,9 +929,6 @@ class TestPlatformDispatcher implements ui.PlatformDispatcher {
   @override
   ui.Locale? computePlatformResolvedLocale(List<ui.Locale> supportedLocales) => _platformDispatcher.computePlatformResolvedLocale(supportedLocales);
 
-  @override
-  ui.PlatformConfiguration get configuration => _platformDispatcher.configuration;
-
   @override
   ui.FrameData get frameData => _platformDispatcher.frameData;