diff --git a/Userland/Libraries/LibJS/Forward.h b/Userland/Libraries/LibJS/Forward.h
index 3e49f8dcf8..f2a374aed4 100644
--- a/Userland/Libraries/LibJS/Forward.h
+++ b/Userland/Libraries/LibJS/Forward.h
@@ -6,12 +6,6 @@
 
 #pragma once
 
-#define JS_DECLARE_OLD_NATIVE_FUNCTION(name) \
-    static JS::Value name(JS::VM&, JS::GlobalObject&)
-
-#define JS_DEFINE_OLD_NATIVE_FUNCTION(name) \
-    JS::Value name([[maybe_unused]] JS::VM& vm, [[maybe_unused]] JS::GlobalObject& global_object)
-
 #define JS_DECLARE_NATIVE_FUNCTION(name) \
     static JS::ThrowCompletionOr<JS::Value> name(JS::VM&, JS::GlobalObject&)
 
diff --git a/Userland/Libraries/LibJS/Runtime/Object.cpp b/Userland/Libraries/LibJS/Runtime/Object.cpp
index 8035696b18..45af10a7e6 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Object.cpp
@@ -1045,29 +1045,6 @@ void Object::set_prototype(Object* new_prototype)
         m_shape = shape.create_prototype_transition(new_prototype);
 }
 
-void Object::define_old_native_accessor(PropertyKey const& property_name, Function<Value(VM&, GlobalObject&)> getter, Function<Value(VM&, GlobalObject&)> setter, PropertyAttributes attribute)
-{
-    Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> completion_getter = {};
-    if (getter) {
-        completion_getter = [getter = move(getter)](auto& vm, auto& global_object) -> ThrowCompletionOr<Value> {
-            auto result = getter(vm, global_object);
-            if (auto* exception = vm.exception())
-                return throw_completion(exception->value());
-            return result;
-        };
-    }
-    Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> completion_setter = {};
-    if (setter) {
-        completion_setter = [setter = move(setter)](auto& vm, auto& global_object) -> ThrowCompletionOr<Value> {
-            auto result = setter(vm, global_object);
-            if (auto* exception = vm.exception())
-                return throw_completion(exception->value());
-            return result;
-        };
-    }
-    define_native_accessor(property_name, move(completion_getter), move(completion_setter), attribute);
-}
-
 void Object::define_native_accessor(PropertyKey const& property_name, Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> getter, Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> setter, PropertyAttributes attribute)
 {
     auto& vm = this->vm();
@@ -1134,17 +1111,6 @@ Value Object::get_without_side_effects(const PropertyKey& property_name) const
     return {};
 }
 
-void Object::define_old_native_function(PropertyKey const& property_name, Function<Value(VM&, GlobalObject&)> native_function, i32 length, PropertyAttributes attribute)
-{
-    auto completion_native_function = [native_function = move(native_function), property_name](auto& vm, auto& global_object) -> ThrowCompletionOr<Value> {
-        auto result = native_function(vm, global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
-        return result;
-    };
-    define_native_function(property_name, move(completion_native_function), length, attribute);
-}
-
 void Object::define_native_function(PropertyKey const& property_name, Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> native_function, i32 length, PropertyAttributes attribute)
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/Object.h b/Userland/Libraries/LibJS/Runtime/Object.h
index 673fa5fd25..8b8a08d76b 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.h
+++ b/Userland/Libraries/LibJS/Runtime/Object.h
@@ -148,10 +148,6 @@ public:
     void define_direct_property(PropertyKey const& property_name, Value value, PropertyAttributes attributes) { storage_set(property_name, { value, attributes }); };
     void define_direct_accessor(PropertyKey const&, FunctionObject* getter, FunctionObject* setter, PropertyAttributes attributes);
 
-    // Legacy methods - Remove once JS_DECLARE_OLD_NATIVE_FUNCTION is removed
-    void define_old_native_function(PropertyKey const&, Function<Value(VM&, GlobalObject&)>, i32 length, PropertyAttributes attributes);
-    void define_old_native_accessor(PropertyKey const&, Function<Value(VM&, GlobalObject&)> getter, Function<Value(VM&, GlobalObject&)> setter, PropertyAttributes attributes);
-
     void define_native_function(PropertyKey const&, Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)>, i32 length, PropertyAttributes attributes);
     void define_native_accessor(PropertyKey const&, Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> getter, Function<ThrowCompletionOr<Value>(VM&, GlobalObject&)> setter, PropertyAttributes attributes);