Remove troublesome return_to and referrer_path logic from EffortsController#delete_split_times and #confirm_split_times.
Remove troublesome return_to and referrer_path logic from EffortsController#delete_split_times and #confirm_split_times.

voltagead/OpenSplitTime,voltagead/OpenSplitTime,SplitTime/OpenSplitTime,voltagead/OpenSplitTime,SplitTime/OpenSplitTime,SplitTime/OpenSplitTime