gluon-luci-admin: remove redundant headings

gluon/gluon-luci-admin/files/usr/lib/lua/luci/view/admin/backup.htm

@@ -13,8 +13,7 @@ $Id$
 
 -%>
 <%+header%>
-<h2><a id="content" name="content"><%:System%></a></h2>
-<h3><%:Backup / Restore%></h3>
+<h2><a id="content" name="content"><%:Backup / Restore%></a></h2>
 <p><%:Here you can backup and restore your configuration and - if possible - reset this device to the default settings.%></p>
 <br />
 <div>

gluon/gluon-luci-admin/files/usr/lib/lua/luci/view/admin/reboot.htm

@@ -13,8 +13,7 @@ $Id$
 
 -%>
 <%+header%>
-<h2><a id="content" name="content"><%:System%></a></h2>
-<h3><%:Reboot%></h3>
+<h2><a id="content" name="content"><%:Reboot%></a></h2>
 <p><%:Reboots the operating system of your device%></p>
 <%-
 local c = require("luci.model.uci").cursor():changes()

gluon/gluon-luci-admin/files/usr/lib/lua/luci/view/admin/upgrade.htm

@@ -15,8 +15,7 @@ $Id$
 
 <%+header%>
 
-<h2><a id="content" name="content"><%:System%></a></h2>
-<h3><%:Flash Firmware%></h3>
+<h2><a id="content" name="content"><%:Flash Firmware%></a></h2>
 
 <% if step == 1 then %>
 	<% if supported then %>