Enable the new navigation by default

app/helpers/application_helper.rb

@@ -303,7 +303,7 @@ module ApplicationHelper
   end
 
   def show_new_nav?
-    cookies["new_nav"] == "true"
+    true
   end
 
   def collapsed_sidebar?

app/views/layouts/header/_default.html.haml

@@ -74,8 +74,6 @@
                     = link_to "Profile", current_user, class: 'profile-link', data: { user: current_user.username }
                   %li
                     = link_to "Settings", profile_path
-                  %li
-                    = link_to "Turn on new navigation", profile_preferences_path(anchor: "new-navigation")
                   %li.divider
                   %li
                     = link_to "Sign out", destroy_user_session_path, method: :delete, class: "sign-out-link"

app/views/layouts/header/_new.html.haml

@@ -68,8 +68,6 @@
                     = link_to "Profile", current_user, class: 'profile-link', data: { user: current_user.username }
                   %li
                     = link_to "Settings", profile_path
-                  %li
-                    = link_to "Turn off new navigation", profile_preferences_path(anchor: "new-navigation")
                   %li.divider
                   %li
                     = link_to "Sign out", destroy_user_session_path, method: :delete, class: "sign-out-link"

app/views/profiles/preferences/show.html.haml

@@ -18,26 +18,6 @@
         = scheme.name
   .col-sm-12
     %hr
-  .col-lg-4.profile-settings-sidebar#new-navigation
-    %h4.prepend-top-0
-      New Navigation
-    %p
-      This setting allows you to turn on or off the new upcoming navigation concept.
-  .col-lg-8.syntax-theme
-    .nav-wip
-      %p
-        The new navigation is currently a work-in-progress concept and is currently only usable on wide-screens. There are a number of improvements that we are working on in order to further refine our navigation.
-      %p
-        %a{ href: 'https://gitlab.com/gitlab-org/gitlab-ce/issues/32794', target: 'blank' } Learn more
-        about the improvements that are coming soon!
-    = label_tag do
-      .preview= image_tag "old_nav.png"
-      %input.js-experiment-feature-toggle{ type: "radio", value: "false", name: "new_nav", checked: !show_new_nav? }
-      Old
-    = label_tag do
-      .preview= image_tag "new_nav.png"
-      %input.js-experiment-feature-toggle{ type: "radio", value: "true", name: "new_nav", checked: show_new_nav? }
-      New
   .col-sm-12
     %hr
   .col-lg-4.profile-settings-sidebar