staging: r8188eu: remove unused DEBUG_OID macro

The DEBUG_OID macro is not used and can be removed.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210807153636.11712-12-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/rtw_ioctl.h

@@ -45,12 +45,6 @@
 #define OID_MP_SEG3		0xFF818700
 #define OID_MP_SEG4		0xFF011100
 
-#define DEBUG_OID(dbg, str)						\
-	if ((!dbg)) {							\
-		RT_TRACE(_module_rtl871x_ioctl_c_, _drv_info_,		\
-			 ("%s(%d): %s", __func__, __line__, str));	\
-	}
-
 enum oid_type {
 	QUERY_OID,
 	SET_OID