Remove icon from milestone reference.

app/models/milestone.rb

@@ -76,7 +76,7 @@ class Milestone < ActiveRecord::Base
   end
 
   def reference_link_text(from_project = nil)
-    %Q{<i class="fa fa-clock-o"></i> }.html_safe + self.title
+    self.title
   end
 
   def expired?

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

@@ -28,7 +28,8 @@
           %span.back-to-milestone
             = link_to namespace_project_milestone_path(@project.namespace, @project, issuable.milestone) do
               %strong
-                = issuable.milestone.reference_link_text
+                = icon('clock-o')
+                = issuable.milestone.title
         - else
           .light None
       .selectbox

lib/banzai/filter/milestone_reference_filter.rb

@@ -3,8 +3,6 @@ require 'banzai'
 module Banzai
   module Filter
     # HTML filter that replaces milestone references with links.
-    #
-    # This filter supports cross-project references.
     class MilestoneReferenceFilter < AbstractReferenceFilter
       def self.object_class
         Milestone

spec/lib/banzai/filter/milestone_reference_filter_spec.rb

@@ -29,7 +29,7 @@ describe Banzai::Filter::MilestoneReferenceFilter, lib: true do
 
     it 'links with adjacent text' do
       doc = reference_filter("milestone (#{reference}.)")
-      expect(doc.to_html).to match(/\(<a.+><i.+><\/i> #{Regexp.escape(milestone.title)}<\/a>\.\)/)
+      expect(doc.to_html).to match(/\(<a.+>#{Regexp.escape(milestone.title)}<\/a>\.\)/)
     end
 
     it 'includes a title attribute' do