rtlwifi: rtl8821ae: phy: Remove a couple of unused variables

Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c: In function ‘rtl8821ae_phy_switch_wirelessband’:
 drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c:597:14: warning: variable ‘rxpath’ set but not used [-Wunused-but-set-variable]
 drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c:597:6: warning: variable ‘txpath’ set but not used [-Wunused-but-set-variable]

Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201102112410.1049272-34-lee.jones@linaro.org

drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c

@@ -594,11 +594,10 @@ void rtl8821ae_phy_switch_wirelessband(struct ieee80211_hw *hw, u8 band)
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 	struct rtl_dm *rtldm = rtl_dm(rtlpriv);
 	u8 current_band = rtlhal->current_bandtype;
-	u32 txpath, rxpath;
 	s8 bb_diff_between_band;
 
-	txpath = rtl8821ae_phy_query_bb_reg(hw, RTXPATH, 0xf0);
-	rxpath = rtl8821ae_phy_query_bb_reg(hw, RCCK_RX, 0x0f000000);
+	rtl8821ae_phy_query_bb_reg(hw, RTXPATH, 0xf0);
+	rtl8821ae_phy_query_bb_reg(hw, RCCK_RX, 0x0f000000);
 	rtlhal->current_bandtype = (enum band_type) band;
 	/* reconfig BB/RF according to wireless mode */
 	if (rtlhal->current_bandtype == BAND_ON_2_4G) {