Removed unused arguments

oargen.py

@@ -43,7 +43,7 @@ def argparser():
 
 
 def prepare_oarsub(gpu, host, core, time,
-                   command=None, argument=None,
+                   command=None,
                    interactive=False,
                    name=None, output_directory=None,
                    besteffort=False,
@@ -112,7 +112,7 @@ def main():
             raise RuntimeError("'{}' is not a directory!".format(args.directory))
 
     oar_command = prepare_oarsub(args.gpu, args.host, args.core, args.time,
-                                 command=args.command, argument=args.argument,
+                                 command=args.command,
                                  interactive=args.interactive,
                                  name=args.name, output_directory=args.directory,
                                  besteffort=args.besteffort, checkpoint=args.checkpoint,