staging: r8188eu: remove two limit defines

Remove two unused defines related to limits.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220321203031.143486-2-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/rtw_mlme_ext.h

@@ -24,9 +24,6 @@
 
 #define REAUTH_LIMIT	(4)
 #define REASSOC_LIMIT	(4)
-#define READDBA_LIMIT	(2)
-
-#define ROAMING_LIMIT	8
 
 #define	DYNAMIC_FUNC_DISABLE			(0x0)