staging: rtl8187se: Simplified function GetSupportedWirelessMode8185()

Removed unnecessary variable in GetSupportedWirelessMode8185() and
shortened its code

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8187se/r8185b_init.c

@@ -927,10 +927,7 @@ static void MacConfig_85BASIC(struct net_device *dev)
 
 u8 GetSupportedWirelessMode8185(struct net_device *dev)
 {
-	u8 btSupportedWirelessMode = 0;
-
-	btSupportedWirelessMode = (WIRELESS_MODE_B | WIRELESS_MODE_G);
-	return btSupportedWirelessMode;
+	return WIRELESS_MODE_B | WIRELESS_MODE_G;
 }
 
 void ActUpdateChannelAccessSetting(struct net_device *dev,