Remove hackathon and roadmap links from menu

Author: dfahlander

_includes/navbar.html

@@ -250,12 +250,6 @@
         <li>
           <a href="https://github.com/dexie/Dexie.js/releases">Releases </a>
         </li>
-        <li><a href="/roadmap/">Road Map</a></li>
-        <li>
-          <a href="/hackathon/">
-            <span class="wave-text">Global Hackathon 25</span>
-          </a>
-        </li>
         <li>
           <a href="https://medium.com/dexie-js" target="dexie-blog">Blog </a>
         </li>