Remove Weekly E-Mail Newsletter

We no longer produce this content.

Author: mzagaja

index.html

@@ -39,8 +39,6 @@ <h3>
       href="{{ site.slack_url }}"
       class="btn-secondary"
       >Say hi on Slack</a>
-    <a href="https://cdn.forms-content.sg-form.com/a1d025e7-35fe-11ec-81c7-aae619d1f5b2"
-      class="btn-secondary">Weekly E-Mail Newsletter</a>
   </div>
 
   <div>