https://github.com/pfsense/pfsense/pull/2000
That gets the run-time use of the old "bindlan" out of services.inc
It provides some upgrade code, in case there are still configs out there that use the old "bindlan" setting to indicate to bind SNMP to LAN IP. If the config has an old "bindlan" set, but also already has "bindip" specified, then "bindlan" is just unset, so it will forever be gone.