Merge branch '258972-remove-unnecessary-content-for-check' into 'master'

Remove unnecessary content_for? checks

Closes #258972

See merge request gitlab-org/gitlab!43856

app/views/layouts/_head.html.haml

@@ -50,12 +50,10 @@
   = render 'layouts/startup_css'
   - if user_application_theme == 'gl-dark'
     = stylesheet_link_tag_defer "application_dark"
-    - if content_for?(:page_specific_styles)
     = yield :page_specific_styles
     = stylesheet_link_tag_defer "application_utilities_dark"
   - else
     = stylesheet_link_tag_defer "application"
-    - if content_for?(:page_specific_styles)
     = yield :page_specific_styles
     = stylesheet_link_tag_defer "application_utilities"
   - unless use_startup_css?
@@ -70,14 +68,10 @@
 
   = Gon::Base.render_data(nonce: content_security_policy_nonce)
 
-  - if content_for?(:library_javascripts)
-    = yield :library_javascripts
-
   = javascript_include_tag locale_path unless I18n.locale == :en
   = webpack_bundle_tag "sentry" if Gitlab.config.sentry.enabled
   = webpack_bundle_tag 'performance_bar' if performance_bar_enabled?
 
-  - if content_for?(:page_specific_javascripts)
   = yield :page_specific_javascripts
 
   = webpack_controller_bundle_tags

app/views/layouts/jira_connect.html.haml

@@ -7,7 +7,6 @@
     = stylesheet_link_tag 'https://unpkg.com/@atlaskit/reduced-ui-pack@10.5.5/dist/bundle.css'
     = javascript_include_tag 'https://connect-cdn.atl-paas.net/all.js'
     = javascript_include_tag 'https://unpkg.com/jquery@3.3.1/dist/jquery.min.js'
-    - if content_for?(:page_specific_styles)
     = yield :page_specific_styles
     = yield :head
   %body

app/views/projects/ci/lints/show.html.haml

 - page_title _("CI Lint")
 - page_description _("Validate your GitLab CI configuration file")
 - unless Feature.enabled?(:monaco_ci, default_enabled: true)
-  - content_for :library_javascripts do
+  - content_for :page_specific_javascripts do
     = page_specific_javascript_tag('lib/ace.js')
 
 %h2.pt-3.pb-3= _("Validate your GitLab CI configuration")