move default env settings to Netdisco.pm

Netdisco/bin/netdisco-do

@@ -59,12 +59,6 @@ $CONFIG->{log} = ($debug ? 'debug' : 'info');
 # reconfigure logging to force console output
 Dancer::Logger->init('console', $CONFIG);
 
-# set max outstanding requests for AnyEvent::DNS
-local $ENV{'PERL_ANYEVENT_MAX_OUTSTANDING_DNS'}
-    = setting('dns')->{max_outstanding} || 10;
-local $ENV{'PERL_ANYEVENT_HOSTS'}
-    = setting('dns')->{hosts_file} || '/etc/hosts';
-
 # for the in-memory local job queue
 schema('daemon')->deploy;