Remove support for attribute event listeners.

client/dom/generated/src/interface/HTMLBodyElement.dart

Index: client/dom/generated/src/interface/HTMLBodyElement.dart
diff --git a/client/dom/generated/src/interface/HTMLBodyElement.dart b/client/dom/generated/src/interface/HTMLBodyElement.dart
index d270ee389a529521b66168a6e0865d7ea282266e..ccdde33fe07a9838aa55af58935a455851cbe5f9 100644
--- a/client/dom/generated/src/interface/HTMLBodyElement.dart
+++ b/client/dom/generated/src/interface/HTMLBodyElement.dart
@@ -22,62 +22,6 @@ interface HTMLBodyElement extends HTMLElement {
 
   void set link(String value);
 
-  EventListener get onbeforeunload();
-
-  void set onbeforeunload(EventListener value);
-
-  EventListener get onblur();
-
-  void set onblur(EventListener value);
-
-  EventListener get onerror();
-
-  void set onerror(EventListener value);
-
-  EventListener get onfocus();
-
-  void set onfocus(EventListener value);
-
-  EventListener get onhashchange();
-
-  void set onhashchange(EventListener value);
-
-  EventListener get onload();
-
-  void set onload(EventListener value);
-
-  EventListener get onmessage();
-
-  void set onmessage(EventListener value);
-
-  EventListener get onoffline();
-
-  void set onoffline(EventListener value);
-
-  EventListener get ononline();
-
-  void set ononline(EventListener value);
-
-  EventListener get onorientationchange();
-
-  void set onorientationchange(EventListener value);
-
-  EventListener get onpopstate();
-
-  void set onpopstate(EventListener value);
-
-  EventListener get onresize();
-
-  void set onresize(EventListener value);
-
-  EventListener get onstorage();
-
-  void set onstorage(EventListener value);
-
-  EventListener get onunload();
-
-  void set onunload(EventListener value);
-
   String get text();
 
   void set text(String value);