Bug 582710 - Remove references to nonexistent IDs from Help (remove left-over, unreferenced heading). r=InvisibleSmiley

suite/locales/en-US/chrome/common/help/nav_help.xhtml

@@ -1470,9 +1470,6 @@
       <a href="cs_nav_prefs_navigator.xhtml#navigator">Browser Preferences -
       Browser</a>.</p>
 
-    <h3 id="customizing_default_browser_settings">Customizing Default Browser
-      Settings</h3>
-
     <p>[<a href="#improving_speed_and_efficiency">Return to beginning of
       section</a>]</p>
 </div>