Remove deprecated calls to updateSemantics in PlatformDispatcher (#36673)

Author: a-wallen

lib/ui/platform_dispatcher.dart

@@ -750,27 +750,6 @@ class PlatformDispatcher {
     _invoke(onAccessibilityFeaturesChanged, _onAccessibilityFeaturesChangedZone,);
   }
 
-  /// Change the retained semantics data about this platform dispatcher.
-  ///
-  /// If [semanticsEnabled] is true, the user has requested that this function
-  /// be called whenever the semantic content of this platform dispatcher
-  /// changes.
-  ///
-  /// In either case, this function disposes the given update, which means the
-  /// semantics update cannot be used further.
-  @Deprecated('''
-    In a multi-view world, the platform dispatcher can no longer provide apis
-    to update semantics since each view will host its own semantics tree.
-
-    Semantics updates must be passed to an individual [FlutterView]. To update
-    semantics, use PlatformDispatcher.instance.views to get a [FlutterView] and
-    call `updateSemantics`.
-  ''')
-  void updateSemantics(SemanticsUpdate update) => _updateSemantics(update);
-
-  @FfiNative<Void Function(Pointer<Void>)>('PlatformConfigurationNativeApi::UpdateSemantics')
-  external static void _updateSemantics(SemanticsUpdate update);
-
   /// The system-reported default locale of the device.
   ///
   /// This establishes the language and formatting conventions that application

lib/web_ui/lib/platform_dispatcher.dart

@@ -83,14 +83,6 @@ abstract class PlatformDispatcher {
   VoidCallback? get onAccessibilityFeaturesChanged;
   set onAccessibilityFeaturesChanged(VoidCallback? callback);
 
-  @Deprecated('''
-    In a multi-view world, the platform dispatcher can no longer provide apis
-    to update semantics since each view will host its own semantics tree.
-
-    Semantics updates must be passed to an individual [FlutterView]. To update
-    semantics, use PlatformDispatcher.instance.views to get a [FlutterView] and
-    call `updateSemantics`.
-  ''')
   void updateSemantics(SemanticsUpdate update);
 
   Locale get locale;

lib/web_ui/lib/src/engine/platform_dispatcher.dart

@@ -690,22 +690,7 @@ class EnginePlatformDispatcher extends ui.PlatformDispatcher {
         _onAccessibilityFeaturesChanged, _onAccessibilityFeaturesChangedZone);
   }
 
-  /// Change the retained semantics data about this window.
-  ///
-  /// If [semanticsEnabled] is true, the user has requested that this function
-  /// be called whenever the semantic content of this window changes.
-  ///
-  /// In either case, this function disposes the given update, which means the
-  /// semantics update cannot be used further.
   @override
-  @Deprecated('''
-    In a multi-view world, the platform dispatcher can no longer provide apis
-    to update semantics since each view will host its own semantics tree.
-
-    Semantics updates must be passed to an individual [FlutterView]. To update
-    semantics, use PlatformDispatcher.instance.views to get a [FlutterView] and
-    call `updateSemantics`.
-  ''')
   void updateSemantics(ui.SemanticsUpdate update) {
     EngineSemanticsOwner.instance.updateSemantics(update);
   }