Merge pull request #5890 from consuldemocracy/remove_obsolete_initializers

Remove initializers no longer in Rails

config/initializers/application_controller_renderer.rb

@@ -1,8 +0,0 @@
-# Be sure to restart your server when you modify this file.
-
-# ActiveSupport::Reloader.to_prepare do
-#   ApplicationController.renderer.defaults.merge!(
-#     http_host: 'example.org',
-#     https: false
-#   )
-# end

config/initializers/backtrace_silencers.rb

@@ -1,8 +0,0 @@
-# Be sure to restart your server when you modify this file.
-
-# You can add backtrace silencers for libraries that you're using but don't wish to see in your backtraces.
-# Rails.backtrace_cleaner.add_silencer { |line| /my_noisy_library/.match?(line) }
-
-# You can also remove all the silencers if you're trying to debug a problem that might stem from framework code
-# by setting BACKTRACE=1 before calling your invocation, like "BACKTRACE=1 ./bin/rails runner 'MyClass.perform'".
-Rails.backtrace_cleaner.remove_silencers! if ENV["BACKTRACE"]

config/initializers/mime_types.rb

@@ -1,4 +0,0 @@
-# Be sure to restart your server when you modify this file.
-
-# Add new mime types for use in respond_to blocks:
-# Mime::Type.register "text/richtext", :rtf