Google My Business (aka GMB) has a feature called "Website" which can provide a "Better than nothing" free BASIC website to business owners. It's only useful to the smallest of small businesses with $0 budget and/or a total lack of web skills.

Unfortunately Google's wording around the product and it's notifications in regards to the product (Even when not published and unused) can be confusing to business owners who might see them.

Exploring the feature within GMB will create a permanent draft that can't be deleted. The feature should be ignored and it's generated draft websites should remain unpublished. 

Examples of notification emails from GMB "Sites" product.