は無用だ

is unnecessary

→ は
phrase Rare #23,880
is unnecessary Used to say that someone or something is useless, unnecessary, or not needed. Often sounds formal, literary, or emphatic. With an action noun, it can mean “there is no need to…”
JA: 心配は無用だ。
EN: There’s no need to worry.

他言は無用だ

Tell no one.

手加減は無用だ

Don't hold back.

— カンフーハッスル (2004)

あいつは無用だ

That guy is useless.

— 不思議惑星キン・ザ・ザ (1986)

だが心配は無用だ

But there’s no need to worry.

— タイタニック (1997)

心配は無用だ

No need to worry.

— ワン・バトル・アフター・アナザー (2025)

こんな墓場長居は無用だ

There’s no point lingering in a graveyard like this.

— 荒野の用心棒 (1964)

そして躊躇は無用だ

And don't hesitate.

— レッドクリフ Part I (2008)