slaprunner: remove outdated comment

software/slaprunner/instance-runner.cfg

@@ -62,11 +62,6 @@ develop-eggs-directory = ${buildout:develop-eggs-directory}
 offline = true
 
 {% if slapparameter_dict.get('custom-frontend-backend-url') -%}
-# Requests, if defined, a frontend to allow access to a server
-# located inside of the virtual machine listening to port X
-# to LAN IPv4.
-# Internaly, the frontend will be asked to listen on the IPv6
-# with port X + 10000, to match NAT rules of Qemu.
 [request-custom-frontend]
 recipe = slapos.cookbook:requestoptional
 software-url = {{ slapparameter_dict.get('custom-frontend-software-url', 'http://git.erp5.org/gitweb/slapos.git/blob_plain/HEAD:/software/apache-frontend/software.cfg') }}