task: remove remapping of node:util.promisify()

[alxndrsn]

Motivation

Reading the current task code, it's not immediately clear why task.promisify is used in place of node's built-in promisify function. Digging deeper, it turns out that this is exactly the same function. This PR aims to save future developers from the overhead of understanding that task.promisify === require('node:util').promisify.

PR Template

What has been done to verify that this works as intended?

Ran tests

Why is this the best possible solution? Were any other approaches considered?

It simplifies the code.

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

This change should not affect users.

Does this change require updates to the API documentation? If so, please update docs/api.yaml as part of this PR.

No.

Before submitting this PR, please make sure you have:

• run make test and confirmed all checks still pass OR confirm CircleCI build passes
• verified that any code from external sources are properly credited in comments or that everything is internally sourced