turn off log statistics in syslog-ng

On TN HA systems, when reviewing the /root/syslog/controller_* files the files are littered with this message:

May 6 00:10:00 169.254.10.1 syslog-ng[4467]: Log statistics; processed='destination(messages)=102', processed='destination(authlog)=3', processed='destination(lpd-errs)=0', processed='destination(daemon)=556', processed='source(this_controller)=198', processed='destination(ppp)=0', processed='destination(other_controller_file)=198', processed='destination(other_controller)=842', processed='destination(security)=0', processed='global(internal_queue_length)=0', processed='src.internal(src#3)=50', stamp='src.internal(src#3)=1588737600', processed='center(queued)=1863', queued='global(scratch_buffers_count)=0', processed='global(payload_reallocs)=82', processed='destination(maillog)=0', processed='source(src)=858', processed='destination(debuglog)=4', queued='global(scratch_buffers_bytes)=0', processed='destination(consolelog)=2', processed='destination(console)=2', processed='destination(system)=1', processed='global(sdata_updates)=0', processed='destination(nginx_error)=0', processed='destination(allusers)=0', processed='destination(xferlog)=0', processed='destination(mdnsresponder)=0', processed='center(received)=1056', dropped='dst.udp(other_controller#0,udp,169.254.10.2:7777)=0', processed='dst.udp(other_controller#0,udp,169.254.10.2:7777)=842', queued='dst.udp(other_controller#0,udp,169.254.10.2:7777)=0', written='dst.udp(other_controller#0,udp,169.254.10.2:7777)=842', processed='destination(nginx_access)=16', processed='global(msg_clones)=0', processed='destination(cron)=137'

That needs to be turned off as it's worthless for almost everything.