Remove mg.request_info.request_uri from error403.lp

This page is currently not used because we redirect to login page in case
of unauthenticated access, but I'm removing it just in case we decide to
change how we handle 403 errors in the future.

Signed-off-by: RD WebDesign <github@rdwebdesign.com.br>

error403.lp

@@ -17,7 +17,7 @@ mg.include('scripts/lua/header.lp','r')
                 <div class="error-content">
                     <h3><i class="fa fa-times-circle text-danger"></i> Oops! Access denied.</h3>
                     <p>
-                        You don't have permission to access <code><?=mg.request_info.request_uri?></code> on this server.<br>
+                        You don't have permission to access this URL.<br>
                         Did you mean to go to <a href="<?=pihole.webhome()?>">your Pi-hole's dashboard</a> instead?
                     </p>
             </div>