Update index.html

Author: lucthienphong1120

index.html

@@ -61,10 +61,6 @@
         <i class="fa-solid fa-school" aria-hidden="true" title="Education"></i>
         <span class="sr-only">Education</span>
       </a>
-      <a target="_blank" href="https://discord.gg/ngTea92XP7/">
-        <i class="fa-brands fa-discord" aria-hidden="true" title="Discord"></i>
-        <span class="sr-only">Discord</span>
-      </a>
       <a target="_blank" href="https://blog.crfnetwork.com/privacy-policy/">
         <i class="fa-solid fa-question" aria-hidden="true" title="Policy"></i>
         <span class="sr-only">Policy</span>