staging: r8188eu: remove HalFunc member of adapter structure

hal_ops structure is empty.
Also remove hal_ops definition.
Signed-off-by: NIvan Safonov <insafonov@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/drv_types.h

@@ -155,7 +155,6 @@ struct adapter {
 	struct	led_priv	ledpriv;
 
 	void *HalData;
-	struct hal_ops	HalFunc;
 
 	s32	bDriverStopped;
 	s32	bSurpriseRemoved;

drivers/staging/rtl8188eu/include/hal_intf.h

@@ -139,9 +139,6 @@ enum hal_intf_ps_func {
 	HAL_MAX_ID,
 };
 
-struct hal_ops {
-};
-
 enum rt_eeprom_type {
 	EEPROM_93C46,
 	EEPROM_93C56,