deactivate exchange rates cron report email

Hi,

There is no setting to send the cron report for some tasks and not other tasks. It's either:
- send no email at all
- send an email when at least a task is triggered
- send an email for each cron trigger, even when no task is triggered
These can be selected with the "send a report" setting of your screenshot.
If you want something else, that would require code customization to the core of the cron trigger system in HikaShop. I don't recommend changing that as you'll loose your changes after each update of HikaShop.