Historically, only JS formatter has had the `detect_code_removal` feature, which uses CI to check for missing nodes or comments.
While this would be useful in other languages (especially CSS), but setting up the mechanism is difficult. For now, just start with something simple that just guarantees the number of comments.
That said, even with a mechanism in place, it can't detect anything unless the cases are fully covered by fixtures, so this only tells us that the current state is problem-free.
Remove the Prettier related stuff from the conformance, which is purely aimed at JS/TS.
Instead, `oxc_formatter_tests` manage Prettier's test fixtures along with Oxfmt.
leaysgur