Remove scrollability by default (#75138)

packages/flutter/lib/src/material/dialog.dart

@@ -438,13 +438,6 @@ class AlertDialog extends StatelessWidget {
   /// to overflow. Both [title] and [content] are wrapped in a scroll view,
   /// allowing all overflowed content to be visible while still showing the
   /// button bar.
-  @Deprecated(
-    'Set scrollable to `true`. This parameter will be removed and '
-    'was introduced to migrate AlertDialog to be scrollable by '
-    'default. For more information, see '
-    'https://flutter.dev/docs/release/breaking-changes/scrollable_alert_dialog. '
-    'This feature was deprecated after v1.13.2.'
-  )
   final bool scrollable;
 
   @override