chore: remove header link

Author: rigor789

layouts/_partials/header.ejs

@@ -1,10 +1,12 @@
 
+<!--
 <a href="https://www.youtube.com/watch?v=QvU3eYova6I"
    target="_blank"
    rel="noopener"
    class="block bg-blue-light md:bg-green md:border-t-8 border-green p-4 md:p-0 text-center no-underline text-white">
    Another Vue of NativeScript Webinar is now on YouTube
 </a>
+-->
 <!--
 <a href="https://attendee.gotowebinar.com/register/8345394807526064899?source=ns-vue"
    target="_blank"