If you're developing an Enterprise Edition site,
wish-list-link is not the droid you're looking for. That block is removed and replaced with
multiple-wish-list-link, thus needs to be removed as follows, in
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<referenceBlock name="multiple-wish-list-link" remove="true"/>
Note this will leave wishlish enabled, so users will still be able to add products to, and view, the wishlist. If you wish to disable the wishlist completely, you should follow the instructions in some of the other answers for disabling the module in the admin panel.