remove referral section from Settings

app/dashboard/templates/dashboard/setting.html

@@ -220,24 +220,6 @@
       </div>
     </div>
 
-    <div class="card" id="referral">
-      <div class="card-body">
-        <div class="card-title">Referrals</div>
-        <div class="mb-3" style="">
-          Creating a different email address for every website/service is good for our privacy and
-          help fighting against spammers. <br>
-          Here you can invite your friends to join SimpleLogin and help protect their privacy. <br>
-          At the beginning of each month, the person who invites most of people joining SimpleLogin
-          wins the lifetime licence :). <br>
-        </div>
-
-        <a href="{{ url_for('dashboard.referral_route') }}" class="btn btn-outline-primary">
-          Invite Friends
-        </a>
-      </div>
-    </div>
-
-
     <div class="card">
       <div class="card-body">
         <div class="card-title">Deleted Aliases</div>