staging: rtl8192e: Remove priv->rf_chip

priv->rf_chip is initialized to RF_8256 and not used. Remove
initialization, variable and enum as it is dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/2ce85c1a159ae376d82c19c61e694924f07d1093.1679732276.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c

@@ -432,8 +432,6 @@ static void _rtl92e_read_eeprom_info(struct net_device *dev)
 
 	rtl92e_init_adaptive_rate(dev);
 
-	priv->rf_chip = RF_8256;
-
 	if (priv->reg_chnl_plan == 0xf)
 		priv->chnl_plan = priv->eeprom_chnl_plan;
 	else

drivers/staging/rtl8192e/rtl8192e/rtl_core.h

@@ -129,15 +129,6 @@ enum dcmg_txcmd_op {
 	TXCMD_XXXX_CTRL,
 };
 
-enum rt_rf_type_819xu {
-	RF_TYPE_MIN = 0,
-	RF_8225,
-	RF_8256,
-	RF_8258,
-	RF_6052 = 4,
-	RF_PSEUDO_11N = 5,
-};
-
 enum rt_customer_id {
 	RT_CID_DEFAULT	  = 0,
 	RT_CID_819x_CAMEO       = 6,
@@ -221,7 +212,6 @@ struct r8192_priv {
 
 	enum rt_customer_id customer_id;
 
-	enum rt_rf_type_819xu rf_chip;
 	enum ht_channel_width current_chnl_bw;
 	struct bb_reg_definition phy_reg_def[4];
 	struct rate_adaptive rate_adaptive;