staging: r8188eu: remove the RT_TRACE macro

We've deleted all RT_TRACE calls. The macro itself can now be removed
as well.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210807153636.11712-13-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/rtw_debug.h

@@ -72,15 +72,6 @@ extern u32 GlobalDebugLevel;
 			pr_info(DRIVER_PREFIX __VA_ARGS__);			\
 	} while (0)
 
-#define RT_TRACE(_comp, _level, fmt)					\
-	do {								\
-		if (_level <= GlobalDebugLevel) {			\
-			pr_info("%s [0x%08x,%d]", DRIVER_PREFIX,	\
-				 (unsigned int)_comp, _level);		\
-			pr_info fmt;					\
-		}							\
-	} while (0)
-
 int proc_get_drv_version(char *page, char **start,
 			 off_t offset, int count,
 			 int *eof, void *data);