remove a bunch of superfluous common_vue bundles

app/views/groups/merge_requests.html.haml

 - page_title "Merge Requests"
 
-- content_for :page_specific_javascripts do
-  = webpack_bundle_tag 'common_vue'
-
 - if group_merge_requests_count(state: 'all').zero?
   = render 'shared/empty_states/merge_requests', project_select_button: true
 - else

app/views/projects/commit/_pipelines_list.haml

@@ -6,6 +6,3 @@
   "empty-state-svg-path" => image_path('illustrations/pipelines_empty.svg'),
   "error-state-svg-path" => image_path('illustrations/pipelines_failed.svg'),
 } }
-
-- content_for :page_specific_javascripts do
-  = webpack_bundle_tag('common_vue')

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

@@ -6,8 +6,6 @@
 - @content_class = limited_container_width
 - page_title        "#{@commit.title} (#{@commit.short_id})", "Commits"
 - page_description  @commit.description
-- content_for :page_specific_javascripts do
-  = webpack_bundle_tag('common_vue')
 
 .container-fluid{ class: [limited_container_width, container_class] }
   = render "commit_box"

app/views/projects/environments/folder.html.haml

 - @no_container = true
 - page_title "Environments"
 
-- content_for :page_specific_javascripts do
-  = webpack_bundle_tag('common_vue')
-
 #environments-folder-list-view{ data: { endpoint: folder_project_environments_path(@project, @folder, format: :json),
   "folder-name" => @folder,
   "can-create-deployment" => can?(current_user, :create_deployment, @project).to_s,

app/views/projects/environments/metrics.html.haml

 - @no_container = true
 - page_title "Metrics for environment", @environment.name
-- content_for :page_specific_javascripts do
-  = webpack_bundle_tag 'common_vue'
 
 .prometheus-container{ class: container_class }
   .top-area

app/views/shared/issuable/_sidebar.html.haml

 - todo = issuable_todo(issuable)
-- content_for :page_specific_javascripts do
-  = webpack_bundle_tag('common_vue')
 
 %aside.right-sidebar.js-right-sidebar.js-issuable-sidebar{ data: { signed: { in: current_user.present? } }, class: sidebar_gutter_collapsed_class, 'aria-live' => 'polite' }
   .issuable-sidebar{ data: { endpoint: "#{issuable_json_path(issuable)}" } }

app/views/shared/milestones/_sidebar.html.haml

 - affix_offset = local_assigns.fetch(:affix_offset, "50")
 - project = local_assigns[:project]
-- content_for :page_specific_javascripts do
-  = page_specific_javascript_bundle_tag('common_vue')
 
 %aside.right-sidebar.js-right-sidebar{ data: { "offset-top" => affix_offset, "spy" => "affix", "always-show-toggle" => true }, class: sidebar_gutter_collapsed_class, 'aria-live' => 'polite' }
   .issuable-sidebar.milestone-sidebar