staging: rtl8188eu: remove yet another unused enum

The hardware_type enum is not used. Remove it.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210725155902.32433-8-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/hal_intf.h

@@ -107,11 +107,6 @@ enum hal_odm_variable {
 
 #define RF_CHANGE_BY_PS		BIT(29)
 
-enum hardware_type {
-	HARDWARE_TYPE_RTL8188EU,
-	HARDWARE_TYPE_MAX,
-};
-
 #define GET_EEPROM_EFUSE_PRIV(adapter) (&adapter->eeprompriv)
 
 void UpdateHalRAMask8188EUsb(struct adapter *adapt, u32 mac_id, u8 rssi_level);