a few more fixes

app/models/cycle_analytics.rb

@@ -32,7 +32,7 @@ class CycleAnalytics
 
   def stats_per_stage
     STAGES.map do |stage_name|
-      self[stage_name].new(project: @project, options: @options).median_data
+      self[stage_name].median_data
     end
   end
 end

lib/gitlab/cycle_analytics/issue_event_fetcher.rb

 module Gitlab
   module CycleAnalytics
     class IssueEventFetcher < BaseEventFetcher
-      include IssueAllowed
-
-      def initialize(*args)
-        @projections = [issue_table[:title],
-                        issue_table[:iid],
-                        issue_table[:id],
-                        issue_table[:created_at],
-                        issue_table[:author_id]]
-
-        super(*args)
-      end
-
-      private
-
-      def serialize(event)
-        AnalyticsIssueSerializer.new(project: @project).represent(event).as_json
-      end
     end
   end
 end

lib/gitlab/cycle_analytics/production_event_fetcher.rb

 module Gitlab
   module CycleAnalytics
-    class ProductionEventFetcher < BaseEventFetcher
+    class ProductionEventFetcher < IssueEventFetcher
       include IssueAllowed
 
       def initialize(*args)