You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: 20180508200948_remove_un_used_attributes_from_models.rb
    path of file: ./repos/forem/db/migrate
    
    the code of the file until where you have to start completion: class RemoveU
    
  def change
    remove_column :articles, :boosted
    remove_column :articles, :github_path
    remove_column :articles, :image_jpg_quality
    remove_column :articles, :intro_html
    remove_column :articles, :programming_category
    remove_column :articles, :sponsor_id
    remove_column :articles, :sponsor_showing

    remove_column :comments, :link_id
    remove_column :comments, :article_conversion_inquiry
    remove_column :comments, :article_conversion_lost
    remove_column :comments, :article_conversion_won

  end