Remove deprecated ci status helper function

After changing all places that used the function, we can now remove it.

app/helpers/ci_status_helper.rb

@@ -123,12 +123,6 @@ module CiStatusHelper
       icon_size: 24)
   end
 
-  def render_pipeline_status(pipeline, tooltip_placement: 'left')
-    project = pipeline.project
-    path = project_pipeline_path(project, pipeline)
-    render_status_with_link('pipeline', pipeline.status, path, tooltip_placement: tooltip_placement)
-  end
-
   def render_status_with_link(type, status, path = nil, tooltip_placement: 'left', cssclass: '', container: 'body', icon_size: 16)
     klass = "ci-status-link ci-status-icon-#{status.dasherize} #{cssclass}"
     title = "#{type.titleize}: #{ci_label_for_status(status)}"

app/views/ci/status/_icon.html.haml

@@ -9,4 +9,4 @@
     = sprite_icon(status.icon, size: size)
 - else
   %span{ class: css_classes, title: title, data: { html: title.present? } }
-    = sprite_icon(status.icon, size: size)
+    = sprite_icon(status.icon, size: size)

spec/views/ci/status/_icon.html.haml_spec.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'spec_helper'
 
 describe 'ci/status/_icon' do