Follow-up to PR #470, remove unneeded constant.
Follow-up to PR #470, remove unneeded constant.

Mario245/ransack,Eric-Guo/ransack,nagyt234/ransack,vaski/ransack,mariorcardoso/ransack,guilleva/ransack,AndrewSwerlick/ransack,martndemus/ransack,amboxer21/ransack,reinteractive/ransack,outstand/ransack,activerecord-hackery/ransack,laserlemon/ransack,johan--/ransack,roman-franko/ransack,avit/ransack