Bug 635500 - Remove unused broadcaster r=neil

editor/ui/composer/content/editor.xul

@@ -114,7 +114,6 @@
   <tooltip id="aHTMLTooltip" onpopupshowing="return FillInHTMLTooltipEditor(this);"/>
 
   <broadcaster id="args" value="about:blank"/>
-  <broadcaster id="canPrint"/>
   
   <!-- Interim hack to transition from nsIXULWindowCallbacks/ShowWindowWithArgs
   <broadcaster id="dialog.start" ready="false"/>

suite/debugQA/content/debugQATextEditorShell.xul

@@ -88,7 +88,6 @@
   </commands>
 
   <broadcaster id="args" value="chrome://debugqa/content/EditorInitPagePlain.html"/>
-  <broadcaster id="canPrint"/>
 
 <!-- Interim hack to transition from nsIXULWindowCallbacks/ShowWindowWithArgs
   <broadcaster id="dialog.start" ready="false"/>