remove async keyword from APNs reload

src/services/NotificationService.ts

@@ -18,7 +18,7 @@ export class NotificationService {
   private encryptionKey = crypto.randomBytes(32);
   private iv = crypto.randomBytes(16);
 
-  public async reloadAPNsTokenIfTimePassed() {
+  public reloadAPNsTokenIfTimePassed() {
     if (this.lastReloadedTimeForAPNsIsTooRecent()) {
       return;
     }