rubocop: fix various style issues.

app/logical/sources/strategies/twitter.rb

@@ -134,15 +134,13 @@ module Sources::Strategies
       url_replacements = url_replacements.to_h
 
       desc = artist_commentary_desc.unicode_normalize(:nfkc)
-      desc = CGI::unescapeHTML(desc)
+      desc = CGI.unescapeHTML(desc)
       desc = desc.gsub(%r!https?://t\.co/[a-zA-Z0-9]+!i, url_replacements)
       desc = desc.gsub(%r!#([^[:space:]]+)!, '"#\\1":[https://twitter.com/hashtag/\\1]')
       desc = desc.gsub(%r!@([a-zA-Z0-9_]+)!, '"@\\1":[https://twitter.com/\\1]')
       desc.strip
     end
 
-  public
-
     def api_client
       TwitterApiClient.new(Danbooru.config.twitter_api_key, Danbooru.config.twitter_api_secret)
     end