[clang-tools-extra] [clang-tidy] Remove addition of emacs tag in checks headers (PR #153942)

[Baranov Victor via cfe-commits]

vbvictor wrote:

> We should also ask for similar changes in open pull requests.

This is a low priority task so I wouldn't bother contributors to manually correct files.

For replacement - I need to write a script for bulk update and I didn't have time. So I'd do that in another PR. Maybe someone else would be interested in updating files.


https://github.com/llvm/llvm-project/pull/153942