Remove perf_times table (#12517)

the data is never used... This type of data is better to store in rrd anyway

poll-billing.php

@@ -151,14 +151,6 @@ $poller_end = microtime(true);
 $poller_run = ($poller_end - $poller_start);
 $poller_time = substr($poller_run, 0, 5);
 
-dbInsert([
-    'type' => 'pollbill',
-    'doing' => $doing,
-    'start' => $poller_start,
-    'duration' => $poller_time,
-    'devices' => 0,
-    'poller' => \LibreNMS\Config::get('distributed_poller_name'),
-], 'perf_times');
 if ($poller_time > 300) {
     logfile("BILLING: polling took longer than 5 minutes ($poller_time seconds)!");
 }