Remvoe Tokenomics from nav bar to keep sync with sl site

Author: JustinFeng

config/smart-layer/navbar.xml

@@ -119,7 +119,6 @@
       <ul class="navbar-nav">
 	      <li class="nav-item"><a class="nav-link" href="https://www.smartlayer.network">Home</a></li>
 	      <li class="nav-item"><a class="nav-link" href="https://www.smartlayer.network/technology">Technology</a></li>
-	      <li class="nav-item"><a class="nav-link" href="https://www.smartlayer.network/tokenomics">Tokenomics</a></li>
         <li class="nav-item external"><a class="nav-link" href="https://document.smartlayer.network/">Docs</a></li>
       </ul>