lint: remove outdated nolint directives

What does this MR do?

golangci-lint was recently bumped to 1.43.0

It seems those issues from the bodyclose linter are no longer reported (probably a false positive in older version of the linter).
I've also added the nolintlint linter to make sure unused //nolint directives are removed

Closes #606 (closed)
Closes #557 (closed)

TODO

• I added the Changelog trailer (e.g. Changelog: feature) to the commits that need to be included in the changelog
• I added unit tests or they are not required
• I added acceptance tests or they are not required
• I added documentation (or it's not required)
• I followed code review guidelines
• I followed Go Style guidelines