Move NitroGrafx config to data folder

NitroGrafx supports this. This would help cleanup the SD root.

Author: Deletecat

build.sh

@@ -28,7 +28,6 @@ cp moonshell_210/moonshl2.nds out/flashcart_base/__rpg/APP/moonshl2.nds
 # copy other apps that aren't yet pulled from official sites
 cp -r extras/APP/* out/flashcart_base/__rpg/APP/
 cp -r extras/ROMs out/flashcart_base/ROMs
-cp -r extras/NitroGrafx out/flashcart_base/NitroGrafx
 cp -r extras/data out/flashcart_base/data
 cp extras/snemul.cfg out/flashcart_base