diff --git a/core/quanta/src/quanta.cpp b/core/quanta/src/quanta.cpp
index 005ecb92..d752d2a4 100644
--- a/core/quanta/src/quanta.cpp
+++ b/core/quanta/src/quanta.cpp
@@ -328,16 +328,3 @@ void quanta_app::run() {
     };
     logger::get_logger()->stop();
 }
-
-bool quanta_app::step() {
-    auto quanta = m_lua.get<luakit::lua_table>("quanta");
-    if (quanta.get_function("run")) {
-        quanta.call([&](std::string_view err) {
-            LOG_FATAL(fmt::format("quanta run err: {} ", err));
-        });
-        check_input(m_lua);
-        return true;
-    }
-    logger::get_logger()->stop();
-    return false;
-}
\ No newline at end of file
diff --git a/core/quanta/src/quanta.h b/core/quanta/src/quanta.h
index 2f223d32..504dafff 100644
--- a/core/quanta/src/quanta.h
+++ b/core/quanta/src/quanta.h
@@ -11,7 +11,6 @@ class quanta_app final
     ~quanta_app();
 
     void run();
-    bool step();
     bool initzip(const char* zfile);
     void setup(int argc, const char* argv[]);
     void load(int argc, const char* argv[]);
@@ -19,7 +18,6 @@ class quanta_app final
     void set_env(std::string key, std::string value, int over = 0);
 
     luakit::lua_table init();
-    luakit::kit_state* state() { return &m_lua; };
     
     lua_State* L() { return m_lua.L();  }