Deleting Subscribers

Hi there! Jetpack subscribers are self service. You can direct users to https://subscribe.wordpress.com/ to manage their subscriptions.

I’m afraid that you can’t remove subscribers from your list yourself. However, you can disable the Subscriptions module, thus stopping the notification emails sent by Jetpack.

You can follow the instructions here to learn how to deactivate a Jetpack module:
https://jetpack.me/support/activate-and-deactivate-modules/

I hope this helps!