rules was part of convert, and we do never finished that branch.

src/kernel/CMakeLists.txt

@@ -69,7 +69,6 @@ pool.c
 race.c
 region.c
 resources.c
-rules.c
 save.c
 ship.c
 skills.c

src/kernel/rules.c

@@ -1,12 +0,0 @@
-#include <platform.h>
-#include "rules.h"
-
-int write_rules(const char *filename) {
-    return -1;
-}
-
-int read_rules(const char *filename)
-{
-    return -1;
-}
-

src/kernel/rules.h

@@ -1,5 +0,0 @@
-#pragma once
-
-int read_rules(const char *filename);
-int write_rules(const char * filename);
-