Add a regression for typo in #remove_schedule
Add a regression for typo in #remove_schedule

There is a typo in #remove_schedule method as noted by @potomak.
See the discussion for details:
https://github.com/resque/resque-scheduler/pull/314#discussion_r8362743

guizmaii/resque-scheduler,ratafire/resque-scheduler,playtestcloud/resque-scheduler,StitchedCode/resque-scheduler,carsonreinke/resque-scheduler,guizmaii/resque-scheduler,resque/resque-scheduler,adaptiv-io/resque-scheduler,StitchedCode/resque-scheduler,mfo/resque-scheduler,stvp/resque-scheduler,adaptiv-io/resque-scheduler,adaptiv-io/resque-scheduler,kangkot/resque-scheduler,stvp/resque-scheduler,xldenis/resque-scheduler,carsonreinke/resque-scheduler,guizmaii/resque-scheduler,mfo/resque-scheduler,playtestcloud/resque-scheduler,kangkot/resque-scheduler,kangkot/resque-scheduler,playtestcloud/resque-scheduler,StitchedCode/resque-scheduler,xldenis/resque-scheduler,stvp/resque-scheduler,mfo/resque-scheduler,resque/resque-scheduler,carsonreinke/resque-scheduler,ratafire/resque-scheduler,ratafire/resque-scheduler,resque/resque-scheduler,xldenis/resque-scheduler