Remove span deprecations (#73747)

packages/flutter/lib/src/painting/inline_span.dart

@@ -156,32 +156,6 @@ abstract class InlineSpan extends DiagnosticableTree {
   /// of [TextSpan].
   final TextStyle? style;
 
-  // TODO(garyq): Remove the deprecated visitTextSpan, text, and children.
-  /// Returns the text associated with this span if this is an instance of [TextSpan],
-  /// otherwise returns null.
-  @Deprecated(
-    'InlineSpan does not innately have text. Use TextSpan.text instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  String? get text => null;
-
-  // TODO(garyq): Remove the deprecated visitTextSpan, text, and children.
-  /// Returns the [InlineSpan] children list associated with this span if this is an
-  /// instance of [TextSpan], otherwise returns null.
-  @Deprecated(
-    'InlineSpan does not innately have children. Use TextSpan.children instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  List<InlineSpan>? get children => null;
-
-  /// Returns the [GestureRecognizer] associated with this span if this is an
-  /// instance of [TextSpan], otherwise returns null.
-  @Deprecated(
-    'InlineSpan does not innately have a recognizer. Use TextSpan.recognizer instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  GestureRecognizer? get recognizer => null;
-
   /// Apply the properties of this object to the given [ParagraphBuilder], from
   /// which a [Paragraph] can be obtained.
   ///
@@ -196,18 +170,6 @@ abstract class InlineSpan extends DiagnosticableTree {
   /// [Paragraph] objects can be drawn on [Canvas] objects.
   void build(ui.ParagraphBuilder builder, { double textScaleFactor = 1.0, List<PlaceholderDimensions>? dimensions });
 
-  // TODO(garyq): Remove the deprecated visitTextSpan, text, and children.
-  /// Walks this [TextSpan] and any descendants in pre-order and calls `visitor`
-  /// for each span that has content.
-  ///
-  /// When `visitor` returns true, the walk will continue. When `visitor` returns
-  /// false, then the walk will end.
-  @Deprecated(
-    'Use visitChildren instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  bool visitTextSpan(bool visitor(TextSpan span));
-
   /// Walks this [InlineSpan] and any descendants in pre-order and calls `visitor`
   /// for each span that has content.
   ///
@@ -319,21 +281,6 @@ abstract class InlineSpan extends DiagnosticableTree {
   @protected
   int? codeUnitAtVisitor(int index, Accumulator offset);
 
-  /// Populates the `semanticsOffsets` and `semanticsElements` with the appropriate data
-  /// to be able to construct a [SemanticsNode].
-  ///
-  /// If applicable, the beginning and end text offset are added to [semanticsOffsets].
-  /// [PlaceholderSpan]s have a text length of 1, which corresponds to the object
-  /// replacement character (0xFFFC) that is inserted to represent it.
-  ///
-  /// Any [GestureRecognizer]s are added to `semanticsElements`. Null is added to
-  /// `semanticsElements` for [PlaceholderSpan]s.
-  @Deprecated(
-    'Implement computeSemanticsInformation instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  void describeSemantics(Accumulator offset, List<int> semanticsOffsets, List<dynamic> semanticsElements);
-
   /// In checked mode, throws an exception if the object is not in a
   /// valid configuration. Otherwise, returns true.
   ///

packages/flutter/lib/src/painting/placeholder_span.dart

@@ -66,18 +66,6 @@ abstract class PlaceholderSpan extends InlineSpan {
     collector.add(InlineSpanSemanticsInformation.placeholder);
   }
 
-  // TODO(garyq): Remove this after next stable release.
-  /// The [visitTextSpan] method is invalid on [PlaceholderSpan]s.
-  @override
-  @Deprecated(
-    'Use to visitChildren instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  bool visitTextSpan(bool visitor(TextSpan span)) {
-    assert(false, 'visitTextSpan is deprecated. Use visitChildren to support InlineSpans');
-    return false;
-  }
-
   /// Populates the `semanticsOffsets` and `semanticsElements` with the appropriate data
   /// to be able to construct a [SemanticsNode].
   ///
@@ -85,7 +73,6 @@ abstract class PlaceholderSpan extends InlineSpan {
   /// replacement character (0xFFFC) that is inserted to represent it.
   ///
   /// Null is added to `semanticsElements` for [PlaceholderSpan]s.
-  @override
   void describeSemantics(Accumulator offset, List<int> semanticsOffsets, List<dynamic> semanticsElements) {
     semanticsOffsets.add(offset.value);
     semanticsOffsets.add(offset.value + 1);

packages/flutter/lib/src/painting/text_span.dart

@@ -79,7 +79,6 @@ class TextSpan extends InlineSpan {
   /// children.
   ///
   /// This getter does not include the contents of its children.
-  @override
   final String? text;
 
 
@@ -92,7 +91,6 @@ class TextSpan extends InlineSpan {
   /// and may have unexpected results.
   ///
   /// The list must not contain any nulls.
-  @override
   final List<InlineSpan>? children;
 
   /// A gesture recognizer that will receive events that hit this span.
@@ -170,7 +168,6 @@ class TextSpan extends InlineSpan {
   /// }
   /// ```
   /// {@end-tool}
-  @override
   final GestureRecognizer? recognizer;
 
   /// An alternative semantics label for this [TextSpan].
@@ -239,36 +236,6 @@ class TextSpan extends InlineSpan {
     return true;
   }
 
-  // TODO(garyq): Remove this after next stable release.
-  /// Walks this [TextSpan] and any descendants in pre-order and calls `visitor`
-  /// for each span that has content.
-  ///
-  /// When `visitor` returns true, the walk will continue. When `visitor`
-  /// returns false, then the walk will end.
-  @override
-  @Deprecated(
-    'Use to visitChildren instead. '
-    'This feature was deprecated after v1.7.3.'
-  )
-  bool visitTextSpan(bool visitor(TextSpan span)) {
-    if (text != null) {
-      if (!visitor(this))
-        return false;
-    }
-    if (children != null) {
-      for (final InlineSpan child in children!) {
-        assert(
-          child is TextSpan,
-          'visitTextSpan is deprecated. Use visitChildren to support InlineSpans',
-        );
-        final TextSpan textSpanChild = child as TextSpan;
-        if (!textSpanChild.visitTextSpan(visitor))
-          return false;
-      }
-    }
-    return true;
-  }
-
   /// Returns the text span that contains the given position in the text.
   @override
   InlineSpan? getSpanForPositionVisitor(TextPosition position, Accumulator offset) {
@@ -338,7 +305,15 @@ class TextSpan extends InlineSpan {
     return null;
   }
 
-  @override
+  /// Populates the `semanticsOffsets` and `semanticsElements` with the appropriate data
+  /// to be able to construct a [SemanticsNode].
+  ///
+  /// If applicable, the beginning and end text offset are added to [semanticsOffsets].
+  /// [PlaceholderSpan]s have a text length of 1, which corresponds to the object
+  /// replacement character (0xFFFC) that is inserted to represent it.
+  ///
+  /// Any [GestureRecognizer]s are added to `semanticsElements`. Null is added to
+  /// `semanticsElements` for [PlaceholderSpan]s.
   void describeSemantics(Accumulator offset, List<int> semanticsOffsets, List<dynamic> semanticsElements) {
     if (
       recognizer != null &&