The employee's voluntary resignation obviated the necessity of firing him.

Going carless obviates the need for a dedicated parking space at home.

The need for a ferry was obviated once the bridge was built.

Many languages have developed reflexive pronouns, by means of which many ambiguities are obviated.

Dictionary apps have obviated the need for printed dictionaries.

These days, a smart phone with a good data plan can obviate the need for a land line.