remove challenge pipeline

Author: kkartunov

src/shared/components/Settings/Preferences/Email/index.jsx

@@ -26,11 +26,6 @@ function toastrError(title, message) {
 const SAVE_DELAY = 1000;
 
 const newsletters = [
-  {
-    id: '9f950b43a1',
-    name: 'Challenge Pipeline',
-    desc: 'Subscribe to this newsletter if you want to get updates on the types of challenges coming up in the future. To view these challenges at your leisure you can always visit the <a href="https://www.topcoder.com/community/pipeline" style="color:#0d61bf;text-decoration:underline">Challenge Pipeline</a> page.',
-  },
   {
     id: 'd0c48e9da3',
     name: 'Gig Work',