Deletes a contact.
Deleting a contact permanently removes it from the contact list. If a contact is also a site member or Wix user, or has a valid billing subscription, the contact can't be deleted. The related site member or Wix user must first be deleted and any valid billing subscriptions must be canceled, before the contact can be deleted.
Members are typically linked to contacts, and while they share a relationship, the member ID and contact ID are distinct identifiers. Make sure to specify the contact ID when calling Delete Contact.
You can only call this method when authenticated as a Wix app or Wix user identity.
ID of the contact to delete.