staging: r8188eu: btcoex_rfon is always false

btcoex_rfon is always false in this driver. Remove the variable and code
that will never be executed.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210911141521.24901-2-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_pwrctrl.c

@@ -200,11 +200,6 @@ void rtw_set_rpwm(struct adapter *padapter, u8 pslv)
 
 	pslv = PS_STATE(pslv);
 
-	if (pwrpriv->btcoex_rfon) {
-		if (pslv < PS_STATE_S4)
-			pslv = PS_STATE_S3;
-	}
-
 	if (pwrpriv->rpwm == pslv)
 		return;
 
@@ -441,8 +436,6 @@ void rtw_init_pwrctrl_priv(struct adapter *padapter)
 
 	pwrctrlpriv->tog = 0x80;
 
-	pwrctrlpriv->btcoex_rfon = false;
-
 	timer_setup(&pwrctrlpriv->pwr_state_check_timer, pwr_state_check_handler, 0);
 }
 

drivers/staging/r8188eu/include/rtw_pwrctrl.h

@@ -188,7 +188,6 @@ struct pwrctrl_priv {
 	u8	power_mgnt;
 	u8	bFwCurrentInPSMode;
 	u32	DelayLPSLastTimeStamp;
-	u8	btcoex_rfon;
 	s32		pnp_current_pwr_state;
 	u8		pnp_bstop_trx;