World serialization done (not well-tested yet)

luprex/core/cpp/luasnap.cpp

@@ -122,21 +122,4 @@ void LuaSnap::deserialize(StreamBuffer *sb) {
 // functionality. So for now, we're sticking with this design, which doesn't
 // require us to maintain any additional code.
 
-bool LuaSnap::have_snapshot() const {
-    return snapshot_.write_count() != 0;
-}
-
-void LuaSnap::snapshot() {
-    assert(snapshot_.write_count() == 0);
-    serialize(&snapshot_);
-}
-
-void LuaSnap::rollback() {
-    assert(snapshot_.write_count() != 0);
-    deserialize(&snapshot_);
-    assert(snapshot_.at_eof());
-    snapshot_.clear();
-}
-
-