Bug #269483 --> remove some obsolete auto update UI

mail/base/content/mailWindowOverlay.xul

@@ -1728,10 +1728,6 @@
       <spacer flex="100%"/>
       </menubar>
     </toolbaritem>
-    
-    <toolbaritem id="softwareupdate-item" title="&updatesItem.title;" align="center" pack="center">
-      <toolbarbutton type="updates" id="softwareupdate" updateCount="0"/>
-    </toolbaritem>
   </toolbar>
 
   <toolbarpalette id="MailToolbarPalette">

mail/base/content/messageWindow.js

@@ -327,23 +327,6 @@ function delayedOnLoadMessageWindow()
   setTimeout(OnLoadMessageWindowDelayed, 0, loadCustomMessage);
   
   SetupCommandUpdateHandlers();
-
-  // Ensure the Software Update item is visible on the menubar on Windows and 
-  // Linux, and on the navigation toolbar on MacOSX (since we can't put items on
-  // the menubar on OS X)... 
-  // We don't use a customizable item for the updates item so we can always be
-  // sure it's present.
-  var updateItem = document.getElementById("softwareupdate-item");
-  updateItem.parentNode.removeChild(updateItem);
-#ifdef XP_MACOSX
-  var theToolbar = document.getElementById("mail-bar");
-#else
-  var theToolbar = document.getElementById("toolbar-menubar");
-#endif
-  if (theToolbar.lastChild.id == "throbber-box")
-    theToolbar.insertBefore(updateItem, document.getElementById("throbber-box"));
-  else
-    theToolbar.appendChild(updateItem);
 }
 
 function OnLoadMessageWindowDelayed(loadCustomMessage)

mail/base/content/msgMail3PaneWindow.js

@@ -845,24 +845,6 @@ function delayedOnLoadMessenger()
 
   var toolbarset = document.getElementById('customToolbars');
   toolbox.toolbarset = toolbarset;
-
-  // Ensure the Software Update item is visible on the menubar on Windows and 
-  // Linux, and on the navigation toolbar on MacOSX (since we can't put items on
-  // the menubar on OS X)... 
-  // We don't use a customizable item for the updates item so we can always be
-  // sure it's present.
-  var updateItem = document.getElementById("softwareupdate-item");
-  updateItem.parentNode.removeChild(updateItem);
-
-#ifdef XP_MACOSX
-  var theToolbar = document.getElementById("mail-bar");
-#else
-  var theToolbar = document.getElementById("mail-toolbar-menubar");
-#endif
-  if (theToolbar.lastChild.id == "throbber-box")
-    theToolbar.insertBefore(updateItem, document.getElementById("throbber-box"));
-  else
-    theToolbar.appendChild(updateItem);
 }
 
 function OnUnloadMessenger()