Stop writing map_groups.h

include/config.h

@@ -254,7 +254,6 @@ enum ProjectFilePath {
     data_pokemon_gfx,
     data_heal_locations,
     constants_global,
-    constants_map_groups,
     constants_items,
     constants_flags,
     constants_vars,

include/project.h

@@ -172,7 +172,6 @@ public:
     void saveMapGroups();
     void saveRegionMapSections();
     void saveWildMonData();
-    void saveMapConstantsHeader();
     void saveHealLocations(Map*);
     void saveTilesets(Tileset*, Tileset*);
     void saveTilesetMetatileLabels(Tileset*, Tileset*);