[llvm] [TableGen] [code-cleanup] Refine TableGen code to comply with `clang-tidy` checks and remove unused imports (PR #113318)

[Kai Nacke via llvm-commits]

redstar wrote:

> What’s the best way to do this? Split it per file?

The removal of unused includes could be separated into a new PR. That would reduce the number of touched files, without creating a flood of PRs.


https://github.com/llvm/llvm-project/pull/113318