Fix doc for DecoratedBox (#59791)

packages/flutter/lib/src/widgets/container.dart

@@ -46,50 +46,6 @@ import 'image.dart';
 /// ```
 /// {@end-tool}
 ///
-/// ## Layout behavior
-///
-/// _See [BoxConstraints] for an introduction to box layout models._
-///
-/// Since [Container] combines a number of other widgets each with their own
-/// layout behavior, [Container]'s layout behavior is somewhat complicated.
-///
-/// Summary: [Container] tries, in order: to honor [alignment], to size itself to
-/// the [child], to honor the `width`, `height`, and [constraints], to expand to
-/// fit the parent, to be as small as possible.
-///
-/// More specifically:
-///
-/// If the widget has no child, no `height`, no `width`, no [constraints],
-/// and the parent provides unbounded constraints, then [Container] tries to
-/// size as small as possible.
-///
-/// If the widget has no child and no [alignment], but a `height`, `width`, or
-/// [constraints] are provided, then the [Container] tries to be as small as
-/// possible given the combination of those constraints and the parent's
-/// constraints.
-///
-/// If the widget has no child, no `height`, no `width`, no [constraints], and
-/// no [alignment], but the parent provides bounded constraints, then
-/// [Container] expands to fit the constraints provided by the parent.
-///
-/// If the widget has an [alignment], and the parent provides unbounded
-/// constraints, then the [Container] tries to size itself around the child.
-///
-/// If the widget has an [alignment], and the parent provides bounded
-/// constraints, then the [Container] tries to expand to fit the parent, and
-/// then positions the child within itself as per the [alignment].
-///
-/// Otherwise, the widget has a [child] but no `height`, no `width`, no
-/// [constraints], and no [alignment], and the [Container] passes the
-/// constraints from the parent to the child and sizes itself to match the
-/// child.
-///
-/// The [margin] and [padding] properties also affect the layout, as described
-/// in the documentation for those properties. (Their effects merely augment the
-/// rules described above.) The [decoration] can implicitly increase the
-/// [padding] (e.g. borders in a [BoxDecoration] contribute to the [padding]);
-/// see [Decoration.padding].
-///
 /// See also:
 ///
 ///  * [Ink], which paints a [Decoration] on a [Material], allowing