Refactor code to make it easier to do 'nopredict' inside of any function without having a dependency on world model.

luprex/cpp/core/world-pairtab.cpp

@@ -136,8 +136,6 @@ void World::pair_lua_tables(const IdVector &basis, lua_State *master) {
         // If the master table is already paired, skip.
         MLS.rawget(midx, mtnmap, mtab);
         if (MLS.isnumber(midx)) continue;
-        // If the synch table is not a table, skip.
-        if (!SLS.istable(stab)) continue;
         // If the synch table doesn't have a number, skip.
         SLS.rawget(sidx, stnmap, stab);
         if (!SLS.isnumber(sidx)) continue;