staging: r8188eu: remove unused PATH_LENGTH_MAX define

PATH_LENGTH_MAX in osdep_service.h is not used and can
be removed.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220115165536.231210-5-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/osdep_service.h

@@ -163,9 +163,6 @@ static inline u32 _RND512(u32 sz)
 	return val;
 }
 
-/*  limitation of path length */
-#define PATH_LENGTH_MAX PATH_MAX
-
 struct rtw_netdev_priv_indicator {
 	void *priv;
 	u32 sizeof_priv;