removed commented out function in builtins
@@ -359,18 +359,7 @@ fn builtin_setattr(vm: &mut VirtualMachine, args: PyFuncArgs) -> PyResult {
// builtin_slice
// builtin_sorted
// builtin_staticmethod
-
-// fn builtin_len(vm: &mut VirtualMachine, args: PyFuncArgs) -> PyResult {
-// arg_check!(vm, args, required = [(obj, None)]);
-// match obj.borrow().kind {
-
-// PyObjectKind::List { ref elements } => {
-// Ok(vm.context().new_int(elements.len() as i32))
-// }
-// _ => Err(vm.new_type_error("unsupported operand type(s) for mod".to_string()))
-// }
-// }
-
+// builtin_sum
// builtin_super
// builtin_vars
// builtin_zip
