Removed Percival specific setup from the filewriter application.
Removed Percival specific setup from the filewriter application.

percival-detector/odin-data,odin-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,percival-detector/odin-data,percival-detector/odin-data,odin-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,odin-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data,odin-detector/odin-data,percival-detector/odin-data