This knowledgebase explains how to disable the Customer Reviews link from displaying in your product page.
The easiest way to disable / turn off customer reviews (“Be the first to review this product” link) is to disable it at the “Disable Module Output” level. To do this, login to your Magento Admin Panel and go to System -> Configuration. Select Advanced from the left navigation select Disabled in the drop down for theMage_Review module.
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