Revert fix for #1489058 because it opened another IE8 focus issue

program/js/list.js

@@ -231,8 +231,6 @@ focus: function(e)
 
   // Un-focus already focused elements (#1487123, #1487316, #1488600, #1488620)
   $(':focus:not(body)').blur();
-  // un-focus iframe bodies (#1489058), this doesn't work in Opera and Chrome
-  $('iframe').contents().find('body').blur();
 
   if (e || (e = window.event))
     rcube_event.cancel(e);