ath10k: remove redundant check of len with buf_len

The check of len > buf_len is redundant as len is initialized
to 0 and buf_len to 4096, so this comparison is always false.
Remove it.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/debug.c

@@ -249,9 +249,6 @@ static ssize_t ath10k_read_wmi_services(struct file *file,
 
 	mutex_lock(&ar->conf_mutex);
 
-	if (len > buf_len)
-		len = buf_len;
-
 	spin_lock_bh(&ar->data_lock);
 	for (i = 0; i < WMI_SERVICE_MAX; i++) {
 		enabled = test_bit(i, ar->wmi.svc_map);