staging: rtl8188eu: remove a bunch of unused defines

Only RF_CHANGE_BY_PS is used by this driver, the other
RF_CHANGE_BY_... defines can be removed.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210725155902.32433-7-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/hal_intf.h

@@ -105,11 +105,7 @@ enum hal_odm_variable {
 	HAL_ODM_WIFI_DISPLAY_STATE,
 };
 
-#define RF_CHANGE_BY_INIT	0
-#define RF_CHANGE_BY_IPS	BIT(28)
 #define RF_CHANGE_BY_PS		BIT(29)
-#define RF_CHANGE_BY_HW		BIT(30)
-#define RF_CHANGE_BY_SW		BIT(31)
 
 enum hardware_type {
 	HARDWARE_TYPE_RTL8188EU,