chore: silence some lint warnings

[JimLarson]

Description

Refs: Agoric/agoric-sdk#9034

Clean up some lint warnings in our added or modified code.

Not trying to fix errors that are not fixed in the surrounding code, e.g. Wrapf().

Author Checklist

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please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

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I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[michaelfig]

Looks good.

Do you maybe want to adopt the deprecation-error avoidance that was done in Agoric/agoric-sdk#8866 ?

[JimLarson]

The deprecation warnings go away in future releases, so I'd rather not take on the extra diffs.