remove jobs page hack to make subnav 100% width

app/assets/stylesheets/pages/builds.scss

@@ -366,9 +366,3 @@
   right: 0;
   margin-top: -17px;
 }
-
-@media (min-width: $screen-md-min) {
-  .sub-nav.build {
-    width: calc(100% + #{$gutter_width});
-  }
-}

app/views/layouts/_page.html.haml

@@ -3,8 +3,9 @@
     .layout-nav
       .container-fluid
         = render "layouts/nav/#{nav}"
-  .content-wrapper{ class: layout_nav_class }
+  - if content_for?(:sub_nav)
     = yield :sub_nav
+  .content-wrapper{ class: layout_nav_class }
     .alert-wrapper
       = render "layouts/broadcast"
       = render "layouts/flash"

app/views/projects/builds/show.html.haml

 - @no_container = true
 - page_title "#{@build.name} (##{@build.id})", "Jobs"
-= render "projects/pipelines/head", build_subnav: true
+= render "projects/pipelines/head"
 
 %div{ class: container_class }
   .build-page

app/views/projects/pipelines/_head.html.haml

 = content_for :sub_nav do
   .scrolling-tabs-container.sub-nav-scroll
     = render 'shared/nav_scroll'
-    .nav-links.sub-nav.scrolling-tabs{ class: ('build' if local_assigns.fetch(:build_subnav, false)) }
+    .nav-links.sub-nav.scrolling-tabs
       %ul{ class: (container_class) }
         - if project_nav_tab? :pipelines
           = nav_link(path: 'pipelines#index', controller: :pipelines) do