rtc: amlogic-a4: drop error messages

Drop error message because there is a high probability they will never be
seen and the final user action is clear, the time has to be set again.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241112143652.3445648-1-alexandre.belloni@bootlin.com


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>