fix: refs #7906 remove code

modules/zone/back/methods/zone/deleteZone.js

@@ -50,14 +50,12 @@ module.exports = Self => {
                     }
                 }
             };
-            const promises = [];
 
             const ticketList = await models.Ticket.find(filter, myOptions);
 
             if (ticketList.length > 0)
                 throw new UserError('There are tickets for this area, delete them first');
 
-            await Promise.all(promises);
             await models.Zone.destroyById(id, myOptions);
 
             if (tx) await tx.commit();