staging: rtl8192e: Remove unchanged variable AcmMethod

AcmMethod is initialized and never changed. The evaluation will always
have the same result. Remove resulting dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/7d73a66184e13d5f8d4af7d21564032247a7e923.1669156825.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c

@@ -224,8 +224,6 @@ void rtl92e_set_reg(struct net_device *dev, u8 variable, u8 *val)
 		u8 acm = pAciAifsn->f.acm;
 		u8 AcmCtrl = rtl92e_readb(dev, AcmHwCtrl);
 
-		AcmCtrl = AcmCtrl | ((priv->AcmMethod == 2) ? 0x0 : 0x1);
-
 		if (acm) {
 			switch (eACI) {
 			case AC0_BE:

drivers/staging/rtl8192e/rtl8192e/rtl_core.c

@@ -830,7 +830,6 @@ static void _rtl92e_init_priv_variable(struct net_device *dev)
 	struct r8192_priv *priv = rtllib_priv(dev);
 	u8 i;
 
-	priv->AcmMethod = eAcmWay2_SW;
 	priv->dot11_current_preamble_mode = PREAMBLE_AUTO;
 	priv->rtllib->status = 0;
 	priv->polling_timer_on = 0;

drivers/staging/rtl8192e/rtl8192e/rtl_core.h

@@ -340,8 +340,6 @@ struct r8192_priv {
 	struct bb_reg_definition PHYRegDef[4];
 	struct rate_adaptive rate_adaptive;
 
-	enum acm_method AcmMethod;
-
 	struct rt_firmware			*pFirmware;
 	enum rtl819x_loopback LoopbackMode;
 

drivers/staging/rtl8192e/rtl819x_Qos.h

@@ -97,13 +97,6 @@ enum direction_value {
 	DIR_BI_DIR		= 3,
 };
 
-enum acm_method {
-	eAcmWay0_SwAndHw		= 0,
-	eAcmWay1_HW			= 1,
-	eAcmWay2_SW			= 2,
-};
-
-
 struct acm {
 	u64		UsedTime;
 	u64		MediumTime;