net/ieee802154: fix repeated words in comments

Delete the redundant word 'was'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220708151538.51483-1-yuanjilin@cdjrlc.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>

drivers/net/ieee802154/ca8210.c

@@ -2293,7 +2293,7 @@ static int ca8210_set_csma_params(
  * @retries:  Number of retries
  *
  * Sets the number of times to retry a transmission if no acknowledgment was
- * was received from the other end when one was requested.
+ * received from the other end when one was requested.
  *
  * Return: 0 or linux error code
  */