Remove monkey_patch.rb now that Rails 4.2.6 is out
monkey_patch.rb has this comment at the top of it:
## This patch is from rails 4.2-stable. Remove it when 4.2.6 is released
## https://github.com/rails/rails/issues/21108
This should have had a TODO
or FIXME
attached to it (not that those get looked at that often anyway, but still).
This should be removed now that we're on 4.2.6.
cc: @rspeicher @vsizov