Try to improve calculation of visited urls/hour 2, a=chrisg

diff --git a/src/executables/QueueServer.php b/src/executables/QueueServer.php
index d15e91a47..36b62c05c 100644
--- a/src/executables/QueueServer.php
+++ b/src/executables/QueueServer.php
@@ -2181,16 +2181,13 @@ class QueueServer implements CrawlConstants
         $crawl_status['COUNT'] = $info_bundle['COUNT'] ?? 0;
         $now = time();
         $change_in_time = C\ONE_HOUR + 1;
-        $least_recent_hourly_pair = [0, 0]; /* initial to something in case
-            while doesn't run */
         while (count($this->hourly_crawl_data) > 0 &&
             $change_in_time > C\ONE_HOUR) {
             $least_recent_hourly_pair = array_pop($this->hourly_crawl_data);
             $change_in_time =
                 ($now - $least_recent_hourly_pair[0]);
         }
-        if ($change_in_time <= C\ONE_HOUR &&
-            $now - $least_recent_hourly_pair[0] < 2 * C\ONE_HOUR) {
+        if ($change_in_time <= C\ONE_HOUR) {
             $this->hourly_crawl_data[] = $least_recent_hourly_pair;
         }
         array_unshift($this->hourly_crawl_data,