staging: r8188eu: remove struct reg_protocol_wt

Remove struct reg_protocol_wt. It's not used in the r8188eu driver.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230111195640.306748-12-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/rtw_io.h

@@ -102,48 +102,6 @@ struct	intf_hdl {
 	struct dvobj_priv *pintf_dev;
 };
 
-struct reg_protocol_wt {
-#ifdef __LITTLE_ENDIAN
-	/* DW1 */
-	u32	NumOfTrans:4;
-	u32	Reserved1:4;
-	u32	Reserved2:24;
-	/* DW2 */
-	u32	ByteCount:7;
-	u32	WriteEnable:1;		/* 0:read, 1:write */
-	u32	FixOrContinuous:1;	/* 0:continuous, 1: Fix */
-	u32	BurstMode:1;
-	u32	Byte1Access:1;
-	u32	Byte2Access:1;
-	u32	Byte4Access:1;
-	u32	Reserved3:3;
-	u32	Reserved4:16;
-	/* DW3 */
-	u32	BusAddress;
-	/* DW4 */
-	u32	Value;
-#else
-	/* DW1 */
-	u32 Reserved1 :4;
-	u32 NumOfTrans:4;
-	u32 Reserved2:24;
-	/* DW2 */
-	u32 WriteEnable:1;
-	u32 ByteCount:7;
-	u32 Reserved3:3;
-	u32 Byte4Access:1;
-	u32 Byte2Access:1;
-	u32 Byte1Access:1;
-	u32 BurstMode:1;
-	u32 FixOrContinuous:1;
-	u32 Reserved4:16;
-	/* DW3 */
-	u32	BusAddress;
-	/* DW4 */
-	u32	Value;
-#endif
-};
-
 uint register_intf_hdl(u8 *dev, struct intf_hdl *pintfhdl);
 void unregister_intf_hdl(struct intf_hdl *pintfhdl);