Remove todos (flutter#30002)

Author: gspencergoog

lib/ui/painting.dart

@@ -26,15 +26,6 @@ part of dart.ui;
 /// platform API supports decoding the image Flutter will be able to render it.
 /// {@endtemplate}
 
-// TODO(gspencergoog): remove this template block once the framework templates
-// are renamed to not reference it.
-/// {@template flutter.dart:ui.imageFormats}
-/// JPEG, PNG, GIF, Animated GIF, WebP, Animated WebP, BMP, and WBMP. Additional
-/// formats may be supported by the underlying platform. Flutter will
-/// attempt to call platform API to decode unrecognized formats, and if the
-/// platform API supports decoding the image Flutter will be able to render it.
-/// {@endtemplate}
-
 bool _rectIsValid(Rect rect) {
   assert(rect != null, 'Rect argument was null.');
   assert(!rect.hasNaN, 'Rect argument contained a NaN value.');

lib/ui/text.dart

@@ -3579,16 +3579,4 @@ FutureOr<void> _sendFontChangeMessage() async {
   }
 }
 
-// TODO(gspencergoog): remove this template block once the framework templates
-// are renamed to not reference it.
-/// {@template flutter.dart:ui.textHeightBehavior}
-/// Defines how the paragraph will apply [TextStyle.height] to the ascent of the
-/// first line and descent of the last line.
-///
-/// Each boolean value represents whether the [TextStyle.height] modifier will
-/// be applied to the corresponding metric. By default, all properties are true,
-/// and [TextStyle.height] is applied as normal. When set to false, the font's
-/// default ascent will be used.
-/// {@endtemplate}
-
 void _loadFontFromList(Uint8List list, _Callback<void> callback, String? fontFamily) native 'loadFontFromList';