Remove obsolete function for retrieving DayStatistics
Remove obsolete function for retrieving DayStatistics

The function that was used before to gather DayStatistics was removed,
because it is no longer needed.

msassmann/texcavator,msassmann/texcavator,msassmann/texcavator,UUDigitalHumanitieslab/texcavator,UUDigitalHumanitieslab/texcavator,msassmann/texcavator,UUDigitalHumanitieslab/texcavator