Rollup merge of rust-lang#106205 - compiler-errors:oopsy, r=fee1-dead

Remove some totally duplicated files in `rustc_infer`

I have no idea why or how I duplicated these files from `compiler/rustc_infer/src/infer/error_reporting/note.rs`, but I did by accident, and nothing caught it 🤦

Author: fee1-dead