wifi: iwlegacy: Remove the unused variable len

Variable len is not effectively used, so delete it.

drivers/net/wireless/intel/iwlegacy/4965-mac.c:4234:7: warning: variable 'len' set but not used.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7223Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231110073602.16846-1-jiapeng.chong@linux.alibaba.com

drivers/net/wireless/intel/iwlegacy/4965-mac.c

@@ -4231,8 +4231,6 @@ il4965_rx_handle(struct il_priv *il)
 		fill_rx = 1;
 
 	while (i != r) {
-		int len;
-
 		rxb = rxq->queue[i];
 
 		/* If an RXB doesn't have a Rx queue slot associated with it,
@@ -4246,10 +4244,6 @@ il4965_rx_handle(struct il_priv *il)
 			       PAGE_SIZE << il->hw_params.rx_page_order,
 			       DMA_FROM_DEVICE);
 		pkt = rxb_addr(rxb);
-
-		len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK;
-		len += sizeof(u32);	/* account for status word */
-
 		reclaim = il_need_reclaim(il, pkt);
 
 		/* Based on type of command response or notification,