By default, the theme comes with several bundled plugins, and upon your first installation, you’ll be prompted to decide whether or not to install them. Whenever the theme is updated, you may also receive notifications to install or update these bundled plugins.
If there’s a specific plugin you’re not using and prefer not to receive notifications for, you can easily disable those alerts through the Theme Panel. See the screenshot below for reference:
Simply uncheck any plugin you don’t want to be bothered by.