Please see Removing an App From Sale (page 92) section on iTunes Connect Developer Guide 6.3
- Click “Rights and Pricing”
- Go to the sale territories section. There is a link near the end
- Click on the “Deselect all” button to uncheck all App Store territories.
- Click on the “Save Changes” button.
After removing all assigned territory checkboxes from your app in the Rights and Pricing section,, the status
changes to Developer Removed from Sale and your app will not be seen on the App Store within 24 hours.