staging: atomisp: remove redudant condition in if-statement

The V4L2_FIELD_ANY is zero, so the (!field) is same meaning
with (field == V4L2_FIELD_ANY) in if-statement.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c

@@ -5081,7 +5081,7 @@ atomisp_try_fmt_file(struct atomisp_device *isp, struct v4l2_format *f)
 
 	depth = get_pixel_depth(pixelformat);
 
-	if (!field || field == V4L2_FIELD_ANY)
+	if (field == V4L2_FIELD_ANY)
 		field = V4L2_FIELD_NONE;
 	else if (field != V4L2_FIELD_NONE) {
 		dev_err(isp->dev, "Wrong output field\n");