remove Node-ChakraCore Nightly builds link from download page

Node-ChakraCore is not being actively developed and there has not been a
nightly build in over 5 months. The repository for the project is
archived. People can download releases, but the nightlies are not a
useful link at this point in time.

Author: Trott

layouts/partials/download-list.hbs

@@ -5,7 +5,6 @@
     <li><a href="/{{site.locale}}/{{site.download.package-manager.link}}/">{{site.download.package-manager.text}}</a></li>
     <li><a href="/{{site.locale}}/{{site.download.releases.link}}/">{{site.download.releases.text}}</a></li>
     <li><a href="https://nodejs.org/download/nightly/">{{site.nightly}}</a></li>
-    <li><a href="https://nodejs.org/download/chakracore-nightly/">{{site.chakracore-nightly}}</a></li>
     <li><a href="https://unofficial-builds.nodejs.org/download/">{{site.unofficial-builds}}</a></li>
     <li><a href="https://github.com/nodejs/node/blob/master/BUILDING.md#building-nodejs-on-supported-platforms">{{downloads.buildInstructions}}</a></li>
     <li><a href="https://github.com/nodejs/help/wiki/Installation">{{site.download.install-on-linux.text}}</a></li>