datafilereader.py: Use the NullObserver that is already implemented in the Commands module
datafilereader.py: Use the NullObserver that is already implemented in the Commands module

HelioGuilherme66/RIDE,caio2k/RIDE,fingeronthebutton/RIDE,robotframework/RIDE,HelioGuilherme66/RIDE,HelioGuilherme66/RIDE,HelioGuilherme66/RIDE,robotframework/RIDE,fingeronthebutton/RIDE,caio2k/RIDE,robotframework/RIDE,robotframework/RIDE,caio2k/RIDE,fingeronthebutton/RIDE