staging: rtl8188eu: remove HW_VAR_MEDIA_STATUS1

The "HAL layer variable" HW_VAR_MEDIA_STATUS1 is not used in this driver.
Remove its define and the code for setting a value.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210725155902.32433-2-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/usb_halinit.c

@@ -1133,15 +1133,6 @@ void rtw_hal_set_hwreg(struct adapter *Adapter, u8 variable, u8 *val)
 			usb_write8(Adapter, MSR, val8);
 		}
 		break;
-	case HW_VAR_MEDIA_STATUS1:
-		{
-			u8 val8;
-
-			val8 = usb_read8(Adapter, MSR) & 0x03;
-			val8 |= *((u8 *)val) << 2;
-			usb_write8(Adapter, MSR, val8);
-		}
-		break;
 	case HW_VAR_SET_OPMODE:
 		hw_var_set_opmode(Adapter, variable, val);
 		break;

drivers/staging/rtl8188eu/include/hal_intf.h

@@ -13,7 +13,6 @@
 
 enum hw_variables {
 	HW_VAR_MEDIA_STATUS,
-	HW_VAR_MEDIA_STATUS1,
 	HW_VAR_SET_OPMODE,
 	HW_VAR_MAC_ADDR,
 	HW_VAR_BSSID,