Staging: rtlwifi: Remove unused variable and the code

Remove unused variable and also remove unused code
associated with initializing the unused variable.

Unused variable was detected using the following
semantic patch by coccinelle.

@@
type T;
identifier i;
constant C;
@@

(
extern T i;
|
- T i;
  <+... when != i
- i = C;
  ...+>
)
Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>

drivers/staging/rtlwifi/btcoexist/halbtcoutsrc.c

@@ -800,7 +800,7 @@ static void halbtc_display_wifi_status(struct btc_coexist *btcoexist,
 	u32 wifi_link_status = 0x0;
 	bool bt_hs_on = false, under_ips = false, under_lps = false;
 	bool low_power = false, dc_mode = false;
-	u8 wifi_chnl = 0, wifi_hs_chnl = 0, fw_ps_state;
+	u8 wifi_chnl = 0, wifi_hs_chnl = 0;
 	u8 ap_num = 0;
 
 	wifi_link_status = halbtc_get_wifi_link_status(btcoexist);
@@ -856,7 +856,6 @@ static void halbtc_display_wifi_status(struct btc_coexist *btcoexist,
 	dc_mode = true;	/*TODO*/
 	under_ips = rtlpriv->psc.inactive_pwrstate == ERFOFF ? 1 : 0;
 	under_lps = rtlpriv->psc.dot11_psmode == EACTIVE ? 0 : 1;
-	fw_ps_state = 0;
 	low_power = 0; /*TODO*/
 	seq_printf(m, "\n %-35s = %s%s%s%s",
 		   "Power Status",
@@ -1644,26 +1643,9 @@ void exhalbtc_rf_status_notify(struct btc_coexist *btcoexist, u8 type)
 
 void exhalbtc_stack_operation_notify(struct btc_coexist *btcoexist, u8 type)
 {
-	u8 stack_op_type;
-
 	if (!halbtc_is_bt_coexist_available(btcoexist))
 		return;
 	btcoexist->statistics.cnt_stack_operation_notify++;
-	if (btcoexist->manual_control)
-		return;
-
-	if ((type == HCI_BT_OP_INQUIRY_START) ||
-	    (type == HCI_BT_OP_PAGING_START) ||
-	    (type == HCI_BT_OP_PAIRING_START)) {
-		stack_op_type = BTC_STACK_OP_INQ_PAGE_PAIR_START;
-	} else if ((type == HCI_BT_OP_INQUIRY_FINISH) ||
-		   (type == HCI_BT_OP_PAGING_SUCCESS) ||
-		   (type == HCI_BT_OP_PAGING_UNSUCCESS) ||
-		   (type == HCI_BT_OP_PAIRING_FINISH)) {
-		stack_op_type = BTC_STACK_OP_INQ_PAGE_PAIR_FINISH;
-	} else {
-		stack_op_type = BTC_STACK_OP_NONE;
-	}
 }
 
 void exhalbtc_halt_notify(struct btc_coexist *btcoexist)