rtc: renesas-rtca3: stop setting max_user_freq

max_user_freq has not been related to the hardware RTC since commit
6610e08 ("RTC: Rework RTC code to use timerqueue for events"). Stop
setting it from individual driver to avoid confusing new contributors.

Reviewed-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20251101-max_user_freq-v1-4-c9a274fd6883@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Author: alexandrebelloni

drivers/rtc/rtc-renesas-rtca3.c

@@ -772,7 +772,6 @@ static int rtca3_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->rtc_dev);
 
 	priv->rtc_dev->ops = &rtca3_ops;
-	priv->rtc_dev->max_user_freq = 256;
 	priv->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_2000;
 	priv->rtc_dev->range_max = RTC_TIMESTAMP_END_2099;