HostServiceTables: drop useless group()

fixes #1509

library/Director/Web/Table/IcingaHostAppliedServicesTable.php

@@ -130,7 +130,7 @@ class IcingaHostAppliedServicesTable extends SimpleQueryBasedTable
             ['hsb' => 'icinga_host_service_blacklist'],
             $db->quoteInto('s.id = hsb.service_id AND hsb.host_id = ?', $this->host->get('id')),
             []
-        )->group('s.id')->where('object_type = ? AND assign_filter IS NOT NULL', 'apply');
+        )->where('object_type = ? AND assign_filter IS NOT NULL', 'apply');
 
         return $db->fetchAll($query);
     }

library/Director/Web/Table/IcingaServiceSetServiceTable.php

@@ -209,7 +209,7 @@ class IcingaServiceSetServiceTable extends ZfQueryBasedTable
                     $this->affectedHost->get('id')
                 ),
                 []
-            )->group('s.id')->columns([
+            )->columns([
                 'blacklisted' => "CASE WHEN hsb.service_id IS NULL THEN 'n' ELSE 'y' END",
             ]);
         } else {