Revert favicon change

lib/fuck_gab_web/templates/layout/app.html.eex

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
     <%= csrf_meta_tag() %>
     <title><%= @header_title %></title>
-    <link rel="icon" type="image/png" href="<%= Routes.static_path(@conn, "/favicon.png") %>" />
+    <link rel="icon" type="image/png" href="/favicon.png" />
     <link rel="stylesheet" href="<%= Routes.static_path(@conn, "/css/app.css") %>"/>
     <style id="theme" type="text/css">
       :root {