staging: comedi: comedi_fops.c: Remove redundant blank line

Removed redunant blank line. Issue found by checkpatch.
Signed-off-by: Sandesh Kenjana Ashok <kas.sandesh@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/comedi_fops.c

@@ -1608,7 +1608,6 @@ static int do_insn_ioctl(struct comedi_device *dev,
 	if (copy_from_user(&insn, arg, sizeof(insn)))
 		return -EFAULT;
 
-
 	n_data = max(n_data, insn.n);
 
 	/* This is where the behavior of insn and insnlist deviate. */