rails/rails — pull request #16657 by printercu (2014-08-23 07:39:42+00:00)
Title: Fix NoMethodError in class-level setter of class_attribute

@pseudomuto @dwbutler #14021

@rafaelfranca I've just removed `remove_possible_method`. Don't know why it was there (maybe for older rubies?). Tested on mri-2.1, jruby-1.7.11.