remove favicon preview on appearance page

app/assets/javascripts/favicon_admin.js

-import {createOverlayIcon} from '~/lib/utils/common_utils';
-
-export default class FaviconAdmin {
-  constructor() {
-    const faviconContainer = $('.js-favicons');
-    const faviconUrl = faviconContainer.data('favicon');
-    const overlayUrls = faviconContainer.data('status-overlays') || [];
-
-    overlayUrls.forEach((statusOverlay) => {
-      createOverlayIcon(faviconUrl, statusOverlay).then((faviconWithOverlayUrl) => {
-        const image = $('<img />');
-        image.addClass('appearance-light-logo-preview');
-        image.attr('src', faviconWithOverlayUrl);
-
-        faviconContainer.append(image);
-      });
-    });
-  }
-}

app/views/admin/appearances/_form.html.haml

@@ -62,12 +62,7 @@
     = f.label :favicon, 'Favicon', class: 'control-label'
     .col-sm-10
       - if @appearance.favicon?
-        = image_tag @appearance.favicon.favicon_main.url, class: 'appearance-light-logo-preview js-main-favicon'
-    - if @appearance.favicon?
-      = f.label :favicon, 'Status icons preview', class: 'control-label'
-    .col-sm-10
-      - if @appearance.favicon?
-        .js-favicons{ data: { favicon: @appearance.favicon.favicon_main.url, status_overlays: Gitlab::Favicon.available_status_overlays } }
+        = image_tag @appearance.favicon.favicon_main.url, class: 'appearance-light-logo-preview'
         - if @appearance.persisted?
           %br
           = link_to 'Remove favicon', favicon_admin_appearances_path, data: { confirm: "Favicon will be removed. Are you sure?"}, method: :delete, class: "btn btn-inverted btn-remove btn-sm remove-logo"

lib/gitlab/favicon.rb

@@ -18,12 +18,6 @@ module Gitlab
         ActionController::Base.helpers.image_path(path)
       end
 
-      def available_status_overlays
-        available_status_names.map do |status_name|
-          status_overlay(status_name)
-        end
-      end
-
       def available_status_names
         @available_status_names ||= begin
           Dir.glob(Rails.root.join('app', 'assets', 'images', 'ci_favicons', '*.png'))

spec/features/admin/admin_appearance_spec.rb

@@ -76,15 +76,14 @@ feature 'Admin Appearance' do
     expect(page).not_to have_css(header_logo_selector)
   end
 
-  scenario 'Favicon', :js do
+  scenario 'Favicon' do
     sign_in(create(:admin))
     visit admin_appearances_path
 
     attach_file(:appearance_favicon, logo_fixture)
     click_button 'Save'
 
-    # 11 = 1 original + 10 overlay variations
-    expect(page).to have_css('.appearance-light-logo-preview', count: 11)
+    expect(page).to have_css('.appearance-light-logo-preview')
 
     click_link 'Remove favicon'