rtc: meson: remove redundant assignment to variable retries

The variable retries is being initialized with a value that is never
read and it is being updated later with a new value in a for-loop.
The initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20191122225210.109172-1-colin.king@canonical.com


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