Remove function for downloading query data
Remove function for downloading query data

The function for downloading query data was moved to query/views.py. The
old copy present in query/download.py is therefore not used anymore and
was removed.

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