staging: gdm724x: emove redundant initialization of variable hci_len

The variable hci_len is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20210609120617.185975-1-colin.king@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gdm724x/gdm_lte.c

@@ -684,7 +684,6 @@ static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len)
 	u32 nic_type;
 	int index;
 
-	hci_len = gdm_dev16_to_cpu(endian, multi_sdu->len);
 	num_packet = gdm_dev16_to_cpu(endian, multi_sdu->num_packet);
 
 	for (i = 0; i < num_packet; i++) {