we dont provide setgroups() replacement, so dont provide the prototype either ... especially since it conflicts on some systems (like Darwin)
diff --git a/include/libbb.h b/include/libbb.h
index 34c7e41..815a3f3 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -82,8 +82,6 @@
/* Some libc's forget to declare these, do it ourself */
extern char **environ;
-/* Set the group set for the current user to GROUPS (N of them). */
-int setgroups(size_t n, const gid_t *groups);
#if defined(__GLIBC__) && __GLIBC__ < 2
int vdprintf(int d, const char *format, va_list ap);
#endif