[bugfix] remove import in (picrin experimental lambda)
[bugfix] remove import in (picrin experimental lambda)

picrin-scheme/picrin,dcurrie/picrin,leavesbnw/picrin,leavesbnw/picrin,dcurrie/picrin,koba-e964/picrin,koba-e964/picrin,omasanori/picrin,ktakashi/picrin,omasanori/picrin,ktakashi/picrin,leavesbnw/picrin,ktakashi/picrin,picrin-scheme/picrin,koba-e964/picrin