staging: rtl8192e: Remove unused variable rxSNRdB

rxSNRdB is initialized and set but never read. Remove dead code. Local
variable rx_snrX is then of no use. Remove rx_snrX as well. Local
variable tmp_rxsnr is then of no use. Remove tmp_rxsnr as well.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/b3150d506556375c4b155c51eabf79e128f50780.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c

@@ -1297,9 +1297,9 @@ static void _rtl92e_query_rxphystatus(
 	struct phy_sts_ofdm_819xpci *pofdm_buf;
 	struct phy_sts_cck_819xpci *pcck_buf;
 	u8 *prxpkt;
-	u8 i, max_spatial_stream, tmp_rxsnr, tmp_rxevm;
+	u8 i, max_spatial_stream, tmp_rxevm;
 	s8 rx_pwr[4], rx_pwr_all = 0;
-	s8 rx_snrX, rx_evmX;
+	s8 rx_evmX;
 	u8 evm, pwdb_all;
 	u32 RSSI, total_rssi = 0;
 	u8 is_cck_rate = 0;
@@ -1419,11 +1419,6 @@ static void _rtl92e_query_rxphystatus(
 			rx_pwr[i] = ((pofdm_buf->trsw_gain_X[i] & 0x3F) *
 				     2) - 110;
 
-			tmp_rxsnr = pofdm_buf->rxsnr_X[i];
-			rx_snrX = (s8)(tmp_rxsnr);
-			rx_snrX /= 2;
-			priv->stats.rxSNRdB[i] = (long)rx_snrX;
-
 			RSSI = rtl92e_rx_db_to_percent(rx_pwr[i]);
 			if (priv->brfpath_rxenable[i])
 				total_rssi += RSSI;

drivers/staging/rtl8192e/rtl8192e/rtl_core.h

@@ -197,7 +197,6 @@ struct rt_stats {
 	long	recv_signal_power;
 	u8 rx_rssi_percentage[4];
 	u8 rx_evm_percentage[2];
-	long rxSNRdB[4];
 	u32 slide_beacon_pwdb[100];
 	u32 slide_beacon_total;
 	u32	CurrentShowTxate;