fix: wrong mailer setup (#516)

Author: ruioliveira02

lib/safira_web/components/layouts/landing.html.heex

@@ -16,7 +16,7 @@
     }>
       Have you checked out the
       <.link class="underline" navigate={~p"/challenges"}>challenges</.link>
-      yet? 🏆
+      yet? <.link href="https://www.youtube.com/watch?v=xvFZjo5PgG0">🏆</.link>
     </:tip>
   </.footer>
 </div>

lib/safira_web/config.ex

@@ -200,20 +200,6 @@ defmodule SafiraWeb.Config do
         url: "/dashboard/schedule/activities",
         scope: %{"schedule" => ["edit"]}
       },
-      %{
-        key: :statistics,
-        title: "Statistics",
-        icon: "hero-chart-bar",
-        url: "/dashboard/statistics",
-        scope: %{"statistics" => ["show"]}
-      },
-      %{
-        key: :mailer,
-        title: "Mailer",
-        icon: "hero-envelope",
-        url: "/dashboard/mailer",
-        scope: %{"mailer" => ["send"]}
-      },
       %{
         key: :scanner,
         title: "Scanner",