staging: rtl8723bs: remove unused RT_PRINTK macro

remove unused RT_PRINTK macro definition.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/edf86e39fce8a53f52c8c8463d134ea426f58b60.1619794331.git.fabioaiuto83@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/odm_debug.h

@@ -87,8 +87,6 @@
 
 /*------------------------Export Marco Definition---------------------------*/
 	#define DbgPrint printk
-	#define RT_PRINTK(fmt, args...)\
-		DbgPrint("%s(): " fmt, __func__, ## args)
 	#define RT_DISP(dbgtype, dbgflag, printstr)
 
 void ODM_InitDebugSetting(struct dm_odm_t *pDM_Odm);