Remove geard graphing from zuul-status dashboard

The zuul job queue is no longer stored in geard so we can safely remove
this graph which has been empty for a long time. Additionally we remove
the geard queue graph for logstash as we are beginning the process of
shutting down those services.

We update the span size of the remaining graphs to make them render a
bit more nicely without the old graphs in place.

Change-Id: I1a690cc90279547b9766c6043db6dbbe3e66deb9

grafana/zuul-status.yaml

@@ -125,41 +125,27 @@ dashboard:
       height: 250px
       panels:
         - title: Zuul Jobs Launched (per Hour)
-          span: 4
+          span: 6
           targets:
             - target: alias(summarize(sumSeries(stats_counts.zuul.tenant.openstack.pipeline.*.all_jobs), '1h'), 'All Jobs')
           type: graph
-        - title: Logstash Job Queue
-          span: 4
-          targets:
-            - target: alias(stats.gauges.logstash.geard.queue.running, 'Running')
-            - target: alias(stats.gauges.logstash.geard.queue.waiting, 'Waiting')
-            - target: alias(stats.gauges.logstash.geard.queue.total, 'Total Jobs')
-          type: graph
         - title: Node Requests
-          span: 4
+          span: 6
           yaxes:
             - min: 0
             - show: false
           targets:
             - target: alias(stats.gauges.zuul.nodepool.current_requests, 'Requests')
           type: graph
-        - title: Zuul Job Queue
-          span: 4
-          targets:
-            - target: alias(stats.gauges.zuul.geard.queue.running, 'Running')
-            - target: alias(stats.gauges.zuul.geard.queue.waiting, 'Waiting')
-            - target: alias(stats.gauges.zuul.geard.queue.total, 'Total Jobs')
-          type: graph
         - title: Gerrit Events (per Hour)
-          span: 4
+          span: 6
           targets:
             - target: alias(summarize(stats_counts.zuul.event.gerrit.comment-added, '1h'), 'Comment added')
             - target: alias(summarize(stats_counts.zuul.event.gerrit.patchset-created, '1h'), 'Patchset created')
             - target: alias(summarize(stats_counts.zuul.event.gerrit.change-merged, '1h'), 'Change merged')
           type: graph
         - title: Test Nodes
-          span: 4
+          span: 6
           stack: true
           tooltip:
             value_type: individual