rails/rails — pull request #3707 by ebeigarts (2011-11-21 08:34:59+00:00)
Title: Refactored remove_column

ActiveRecord::Table#remove should use `*column_names` instead of `column_names`.

So, I have removed unnecessary flatten for column_names that also caused issues [here](https://github.com/rsim/oracle-enhanced/issues/124).