staging: rtl8723bs: remove DBG_871X_SEL_NL macro declaration

remove DBG_871X_SEL_NL obsolete macro declaration.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/8839231b53881c8bf1f8a4d70953ec8acaa2fe95.1618401896.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/include/rtw_debug.h

@@ -181,15 +181,6 @@
 			seq_printf(sel, fmt, ##arg);			\
 	} while (0)
 
-/* dump message to selected 'stream' with driver-defined prefix */
-#define DBG_871X_SEL_NL(sel, fmt, arg...)				\
-	do {								\
-		if (sel == RTW_DBGDUMP)					\
-			DBG_871X_LEVEL(_drv_always_, fmt, ##arg);	\
-		else							\
-			seq_printf(sel, fmt, ##arg);			\
-	} while (0)
-
 #endif /* defined(_dbgdump) */
 
 void sd_f0_reg_dump(void *sel, struct adapter *adapter);