Fix assert unreachable, remove unused variables (#13753)

Small code cleanup

packages/twenty-server/src/modules/messaging/monitoring/crons/jobs/messaging-message-channel-sync-status-monitoring.cron.job.ts

@@ -1,4 +1,3 @@
-import { Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 
 import snakeCase from 'lodash.snakecase';
@@ -20,10 +19,6 @@ export const MESSAGING_MESSAGE_CHANNEL_SYNC_STATUS_MONITORING_CRON_PATTERN =
 
 @Processor(MessageQueue.cronQueue)
 export class MessagingMessageChannelSyncStatusMonitoringCronJob {
-  private readonly logger = new Logger(
-    MessagingMessageChannelSyncStatusMonitoringCronJob.name,
-  );
-
   constructor(
     @InjectRepository(Workspace, 'core')
     private readonly workspaceRepository: Repository<Workspace>,