Remove previous landing page (#19300)

app/views/about/show.html.haml

@@ -1,69 +0,0 @@
-- content_for :page_title do
-  = site_hostname
-
-- content_for :header_tags do
-  %link{ rel: 'canonical', href: about_url }/
-  = render partial: 'shared/og'
-
-.landing
-  .landing__brand
-    = link_to root_url, class: 'brand' do
-      = logo_as_symbol(:wordmark)
-      %span.brand__tagline=t 'about.tagline'
-
-  .landing__grid
-    .landing__grid__column.landing__grid__column-registration
-      .box-widget
-        = render 'registration'
-
-      .directory
-        .directory__tag
-          = link_to web_path do
-            %h4
-              = fa_icon 'globe fw'
-              = t('about.see_whats_happening')
-              %small= t('about.browse_public_posts')
-
-        .directory__tag
-          = link_to 'https://joinmastodon.org/apps', target: '_blank', rel: 'noopener noreferrer' do
-            %h4
-              = fa_icon 'tablet fw'
-              = t('about.get_apps')
-              %small= t('about.apps_platforms')
-
-    .landing__grid__column.landing__grid__column-login
-      .box-widget
-        - if current_user.present?
-          = render 'logged_in'
-        - else
-          = render 'login'
-
-      .hero-widget
-        .hero-widget__img
-          = image_tag @instance_presenter.hero&.file&.url || @instance_presenter.thumbnail&.file&.url || asset_pack_path('media/images/preview.png'), alt: @instance_presenter.title
-
-        .hero-widget__text
-          %p
-            = @instance_presenter.description.html_safe.presence || t('about.about_mastodon_html')
-            = link_to about_more_path do
-              = t('about.learn_more')
-              = fa_icon 'angle-double-right'
-
-        .hero-widget__footer
-          .hero-widget__footer__column
-            %h4= t 'about.administered_by'
-
-            = account_link_to @instance_presenter.contact.account
-
-          .hero-widget__footer__column
-            %h4= t 'about.server_stats'
-
-            .hero-widget__counters__wrapper
-              .hero-widget__counter
-                %strong= friendly_number_to_human @instance_presenter.user_count
-                %span= t 'about.user_count_after', count: @instance_presenter.user_count
-              .hero-widget__counter
-                %strong= friendly_number_to_human @instance_presenter.active_user_count
-                %span
-                  = t 'about.active_count_after'
-                  %abbr{ title: t('about.active_footnote') } *