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It is possible for a page to never generate a search engine referral but still be vital. Think about your checkout page, that is probably not bringing in any traffic but you need it for your business to operate. Maybe your testimonial page doesn't bring in traffic but I bet it probably helps to convert the traffic that is brought in by other pages.
I value pages not just by the traffic they bring into the site but how well they help users who are already on the site.
If a page has zero page views, then look into why not and then transform it so you can salvage as much content as possible.