1 files changed, 0 insertions, 91 deletions
diff --git a/lib/gitlab/cycle_analytics/usage_data.rb b/lib/gitlab/cycle_analytics/usage_data.rb
deleted file mode 100644
index e58def57e69..00000000000
--- a/lib/gitlab/cycle_analytics/usage_data.rb
+++ /dev/null
@@ -1,91 +0,0 @@
-# frozen_string_literal: true
-
-module Gitlab
-  module CycleAnalytics
-    class UsageData
-      include Gitlab::Utils::StrongMemoize
-      PROJECTS_LIMIT = 10
-
-      attr_reader :options
-
-      def initialize
-        @options = { from: 7.days.ago }
-      end
-
-      def projects
-        strong_memoize(:projects) do
-          projects = Project.where.not(last_activity_at: nil).order(last_activity_at: :desc).limit(10) +
-                     Project.where.not(last_repository_updated_at: nil).order(last_repository_updated_at: :desc).limit(10)
-
-          projects = projects.uniq.sort_by do |project|
-            [project.last_activity_at, project.last_repository_updated_at].min
-          end
-
-          if projects.size < 10
-            projects.concat(Project.where(last_activity_at: nil, last_repository_updated_at: nil).limit(10))
-          end
-
-          projects.uniq.first(10)
-        end
-      end
-
-      def to_json(*)
-        total = 0
-
-        values =
-          medians_per_stage.each_with_object({}) do |(stage_name, medians), hsh|
-            calculations = stage_values(medians)
-
-            total += calculations.values.compact.sum
-            hsh[stage_name] = calculations
-          end
-
-        values[:total] = total
-
-        { avg_cycle_analytics: values }
-      end
-
-      private
-
-      def medians_per_stage
-        projects.each_with_object({}) do |project, hsh|
-          ::CycleAnalytics::ProjectLevel.new(project, options: options).all_medians_by_stage.each do |stage_name, median|
-            hsh[stage_name] ||= []
-            hsh[stage_name] << median
-          end
-        end
-      end
-
-      def stage_values(medians)
-        medians = medians.map(&:presence).compact
-        average = calc_average(medians)
-
-        {
-          average: average,
-          sd: standard_deviation(medians, average),
-          missing: projects.length - medians.length
-        }
-      end
-
-      def calc_average(values)
-        return if values.empty?
-
-        (values.sum / values.length).to_i
-      end
-
-      def standard_deviation(values, average)
-        Math.sqrt(sample_variance(values, average)).to_i
-      end
-
-      def sample_variance(values, average)
-        return 0 if values.length <= 1
-
-        sum = values.inject(0) do |acc, val|
-          acc + (val - average)**2
-        end
-
-        sum / (values.length - 1)
-      end
-    end
-  end
-end