Do away with

She tried to do away with the argument by changing the topic.

The criminals tried to do away with the evidence before the police arrived.

She’s working hard to do away with negative thinking.

For no nearness in space, no closeness of relations, no daily intimacy, can do away with the inexorable laws which give the adept his seclusion.

Using electricity as motive power for railroads will do away with fuel trains, tenders, coal handling, water, and all that.

Centralised traffic control does away with intermediate operators over long stretches of line.

In most countries, homework has come to be an integral part of the schooling system. So much so that parents are suspicious when schools do away with homework.

He plotted to do away with his rival.

[…]unless we can begin to understand that the vast majority of those who do away with themselves—and of those who attempt to do so—do not do it because of any frailty, and rarely out of impulse, but because they are in the grip of an illness that causes almost unimaginable pain.