Removing obsoleted Charset Detectors menu item. r=none (one-liner)

suite/browser/navigatorOverlay.xul

@@ -21,8 +21,6 @@ Contributor(s): ______________________________________. -->
 
 <?xul-overlay href="chrome://global/content/globalOverlay.xul"?>
 <?xul-overlay href="chrome://global/content/charsetOverlay.xul"?>
-<?xul-overlay href="chrome://global/content/charsetDetectorsOverlay.xul"?>
-
 
 <!DOCTYPE window SYSTEM "chrome://navigator/locale/navigator.dtd" >
 
@@ -300,7 +298,6 @@ Contributor(s): ______________________________________. -->
                  </menu>
 END of Deprecated -->
       <menu id = "charsetMenu" />
-      <menu id="CharsetDetectorsMenu" />
    </menupopup>
   </menu>
   <menu accesskey="s" value="&searchMenu.label;">