rtc: cleanup obsolete comment about struct rtc_class_ops
Commit
ea369ea6d828 ("rtc: remove .open() and .release()") removes
open/release callback from struct rtc_class_ops.
Also commit
80d4bb515b78 ("RTC: Cleanup rtc_class_ops->irq_set_state")
and commit
696160fec162 ("RTC: Cleanup rtc_class_ops->irq_set_freq()")
removes irq callbacks.
So, just remove related comments so that readers will not be confused.
Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200710080003.7986-1-misono.tomohiro@jp.fujitsu.com