small refactor - removing includes no longer needed

app/serializers/analytics_commit_entity.rb

 class AnalyticsCommitEntity < CommitEntity
-  include RequestAwareEntity
   include EntityDateHelper
 
   expose :short_id, as: :short_sha

lib/gitlab/cycle_analytics/events_fetcher.rb

 module Gitlab
   module CycleAnalytics
     class EventsFetcher
-      include MetricsFetcher
-
       def initialize(project:, options:)
         @query = EventsQuery.new(project: project, options: options)
       end

spec/serializers/entity_date_helper_spec.rb

@@ -42,4 +42,4 @@ describe EntityDateHelper do
   it 'converts 986760 seconds' do
     expect(date_helper_class.distance_of_time_as_hash(986760)).to eq(days: 11, hours: 10, mins: 6)
   end
-end
\ No newline at end of file
+end