rtlwifi: rtl8821ae: remove set but not used variable 'type' in translate_rx_signal_stuff

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c: In function 'translate_rx_signal_stuff':
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c:309:6: warning:
 variable 'type' set but not used [-Wunused-but-set-variable]

It never used since commit 21e4b072 ("rtlwifi: rtl8821ae: Move driver from
staging to regular tree")
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/rtl8821ae/trx.c

@@ -306,14 +306,12 @@ static void translate_rx_signal_stuff(struct ieee80211_hw *hw,
 	u8 *praddr;
 	u8 *psaddr;
 	__le16 fc;
-	u16 type;
 	bool packet_matchbssid, packet_toself, packet_beacon;
 
 	tmp_buf = skb->data + pstatus->rx_drvinfo_size + pstatus->rx_bufshift;
 
 	hdr = (struct ieee80211_hdr *)tmp_buf;
 	fc = hdr->frame_control;
-	type = WLAN_FC_GET_TYPE(hdr->frame_control);
 	praddr = hdr->addr1;
 	psaddr = ieee80211_get_SA(hdr);
 	ether_addr_copy(pstatus->psaddr, psaddr);