[fix] chore: remove unused preciseTopicPublishRateLimiterEnable

[dlg99]

Motivation

apache#21681 removed actual uses of preciseTopicPublishRateLimiterEnable config but left some plumbing (setting/reading config) in the code.

Modifications

Removing unused code

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository: #23