Need patch for #5 (disable remote logging)

[bennlich]

See sudomesh/bugs#5 for history/context. And in particular: sudomesh/makenode@13fd952.

We need a patch that removes these lines from /etc/config/system in existing nodes:

option log_proto udp
option log_port 514
option log_prefix <%= host_name %>
option log_ip <%= log_ip %>

I think the <%= log_ip %> is the same on every node, but the <%= host_name %> varies.

I think the approaches I was considering when I stopped working on this were either:
a) overwrite /etc/config/system wholesale with a correct config based on the latest firmware (requires querying the system for the hostname). could annoy node operators who have made custom changes to this file.
b) use a tool like sed to hand-remove the specific bad lines.