Remove feature flag check from helper

  - Remove track_unique_visits check from
  unique_visits_helper.rb we now check the
  feature flags in HLLRedisCounter

app/helpers/analytics/unique_visits_helper.rb

@@ -14,7 +14,6 @@ module Analytics
     end
 
     def track_visit(target_id)
-      return unless Feature.enabled?(:track_unique_visits, default_enabled: true)
       return unless visitor_id
 
       Gitlab::Analytics::UniqueVisits.new.track_visit(visitor_id, target_id)

spec/helpers/analytics/unique_visits_helper_spec.rb

@@ -9,19 +9,6 @@ RSpec.describe Analytics::UniqueVisitsHelper do
     let(:target_id) { 'p_analytics_valuestream' }
     let(:current_user) { create(:user) }
 
-    before do
-      stub_feature_flags(track_unique_visits: true)
-    end
-
-    it 'does not track visits if feature flag disabled' do
-      stub_feature_flags(track_unique_visits: false)
-      sign_in(current_user)
-
-      expect_any_instance_of(Gitlab::Analytics::UniqueVisits).not_to receive(:track_visit)
-
-      helper.track_visit(target_id)
-    end
-
     it 'does not track visit if user is not logged in' do
       expect_any_instance_of(Gitlab::Analytics::UniqueVisits).not_to receive(:track_visit)