counter: ftm-quaddec: Drop unused platform_set_drvdata()

The driver doesn't ever use platform_get_drvdata, so drop this unused
call.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20211230150300.72196-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/counter/ftm-quaddec.c

@@ -269,8 +269,6 @@ static int ftm_quaddec_probe(struct platform_device *pdev)
 	if (!ftm)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, ftm);
-
 	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!io) {
 		dev_err(&pdev->dev, "Failed to get memory region\n");