Removed some unused code.

src/platform_unix.c

@@ -39,11 +39,6 @@
 
 #include "physfs_internal.h"
 
-/* !!! FIXME: we should probably remove MAXPATHLEN entirely, if we can. */
-#ifndef MAXPATHLEN
-#define MAXPATHLEN 1024
-#endif
-
 int __PHYSFS_platformInit(void)
 {
     return 1;  /* always succeed. */