chore: remove banner

Author: rigor789

layouts/_partials/header.ejs

@@ -1,9 +1,11 @@
+<!--
 <a href="https://www.surveymonkey.com/r/6FYQDZY?ref=nativescript-vue"
    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 underline text-white">
    Help us improve NativeScript by filling out a quick survey!
 </a>
+-->
 <!--
 <a href="https://www.youtube.com/watch?v=QvU3eYova6I"
    target="_blank"