ath6kl: remove redundant variables netlen, orig_buf, orig_len, dropped and stats

Variables netlen, orig_buf, orig_len, dropped and stats are assigned values
but are never used hence they are redundant and can be removed.

Cleans up clang warnings:
warning: variable 'netlen' set but not used [-Wunused-but-set-variable]
warning: variable 'orig_buf' set but not used [-Wunused-but-set-variable]
warning: variable 'orig_len' set but not used [-Wunused-but-set-variable]
warning: variable 'dropped' set but not used [-Wunused-but-set-variable]
warning: variable 'stats' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>

drivers/net/wireless/ath/ath6kl/htc_pipe.c

···
 	struct htc_endpoint *ep;
 	struct htc_packet *packet;
 	u8 ep_id, *netdata;
-	u32 netlen;
 
 	netdata = skb->data;
-	netlen = skb->len;
 
 	htc_hdr = (struct htc_frame_hdr *) netdata;
 
···
 {
 	struct htc_credit_report *report;
 	struct htc_record_hdr *record;
-	u8 *record_buf, *orig_buf;
-	int orig_len, status;
-
-	orig_buf = buffer;
-	orig_len = len;
-	status = 0;
+	u8 *record_buf;
+	int status = 0;
 
 	while (len > 0) {
 		if (len < sizeof(struct htc_record_hdr)) {

drivers/net/wireless/ath/ath6kl/main.c

···
 {
 	struct ath6kl_dbglog_hdr debug_hdr;
 	struct ath6kl_dbglog_buf debug_buf;
-	u32 address, length, dropped, firstbuf, debug_hdr_addr;
+	u32 address, length, firstbuf, debug_hdr_addr;
 	int ret, loop;
 	u8 *buf;
 
···
 	address = TARG_VTOP(ar->target_type,
 			    le32_to_cpu(debug_hdr.dbuf_addr));
 	firstbuf = address;
-	dropped = le32_to_cpu(debug_hdr.dropped);
 	ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
 	if (ret)
 		goto out;

drivers/net/wireless/ath/ath6kl/txrx.c

···
 	struct ath6kl_sta *sta;
 	struct aggr_info_conn *aggr_conn = NULL;
 	struct rxtid *rxtid;
-	struct rxtid_stats *stats;
 	u16 hold_q_size;
 	u8 tid, aid;
 
···
 		return;
 
 	rxtid = &aggr_conn->rx_tid[tid];
-	stats = &aggr_conn->stat[tid];
 
 	if (win_sz < AGGR_WIN_SZ_MIN || win_sz > AGGR_WIN_SZ_MAX)
 		ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: win_sz %d, tid %d\n",