removed superflous method

fixed scope

app/models/request_for_comment.rb

@@ -8,7 +8,7 @@ class RequestForComment < ActiveRecord::Base
   has_many :subscriptions
 
   scope :unsolved, -> { where(solved: [false, nil]) }
-  scope :not_stale, -> { where("user_id%10 <2 OR user_id%10 >= 4").where(exercise.exercise_collections.none{|ec| ec.id = 3} } ########### todo
+  scope :not_stale, -> { where("user_id%10 < 3").where(exercise.exercise_collections.none{|ec| ec.id = 3} }
 
     def self.last_per_user(n = 5)
       from("(#{row_number_user_sql}) as request_for_comments")

lib/user_group_separator.rb

@@ -31,16 +31,4 @@ class UserGroupSeparator
       :recommended_assignment
     end
   end
-
-  def self.getRequestforCommentGroup(user)
-    lastDigitId = user.id % 10
-    if lastDigitId < 2 # 0,1
-      :hide_rfc
-    elsif lastDigitId < 4 # 2,3
-      :stale_rfc
-    else # 4,5,6,7,8,9
-      :show_rfc
-    end
-  end
-
 end