remove unused imports

## Issue Description

Type: *bug report* or *feature request*

### Describe what happened (or what feature you want)

### Describe what you expected to happen

### How to reproduce it (as minimally and precisely as possible)

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### Tell us your environment

### Anything else we need to know?

The issue names no Java file, package, failing test, or reproduction steps, so there is no reliable starting entry point. Clarify which unused imports are in scope, then identify the affected files and run the relevant project tests; done means the agreed imports are removed without introducing compilation or test failures.

Written by the indexing model from the issue text.