気にせぬ
気にせずに
I don't mind that.
Don't be.
はたが気が利かない
I don't care a pin.
to go against the grain―go against the stomach―(形容詞に訳せば)―to be disagreeable to one―distasteful to one―unsatisfactory to one―unacceptable to one
the act of taking no notice of something
気がのらない。
Never mind about that.
気にしないよ。