diff --git a/app/decorators/chart_decorator.rb b/app/decorators/chart_decorator.rb
deleted file mode 100644
index b3cabd000..000000000
--- a/app/decorators/chart_decorator.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-class ChartDecorator < Draper::CollectionDecorator
-  def total_by_type_per_day(options)
-    case options[:type]
-    when "Comment"
-      object.group_by { |e| e.created_at.beginning_of_day }.transform_values do |v|
-        v.select { |comment| comment.commentable_id == options[:article_id] }.length
-      end.values # will be an array of integers: [1,2,3,4]
-    when "Reaction"
-      object.group_by { |e| e.created_at.beginning_of_day }.transform_values do |v|
-        v.select { |reaction| reaction.category == options[:category] }.length
-      end.values # will be an array of integers: [1,2,3,4]
-    end
-  end
-
-  def total_per_day
-    object.group_by { |e| e.created_at.beginning_of_day }.transform_values(&:length).values
-  end
-
-  def formatted_dates
-    object.sort_by(&:created_at).group_by { |e| e.created_at.beginning_of_day }.
-      transform_keys { |k| k.strftime("%a, %m/%d") }.keys
-  end
-end