rails/rails — pull request #6223 by carlosantoniodasilva (2012-05-09 11:56:38+00:00)
Title: Stop showing deprecations for Ruby 1.8.7 with remove_column

String is Enumerable in 1.8.7, which means that passing a String to remove_column was generating deprecation warnings during tests.

http://travis-ci.org/#!/rails/rails/jobs/1283165