Rollup merge of #83215 - bstrie:dephaikuraw, r=joshtriplett
Rollup merge of #83215 - bstrie:dephaikuraw, r=joshtriplett

Deprecate std::os::haiku::raw, which accidentally wasn't deprecated

In early 2016, all `std::os::*::raw` modules [were deprecated](https://github.com/rust-lang/rust/commit/aa23c98450063992473d40d707273903f8a3937d) in accordance with [RFC 1415](https://github.com/rust-lang/rfcs/blob/master/text/1415-trim-std-os.md). However, at this same time support for Haiku was being added to libstd, landing shortly after the aforementioned commit, and due to some crossed wires a `std::os::haiku::raw` module was added and was not marked as deprecated.

I have been in correspondence with the author of the Haiku patch, ````@nielx,```` who has confirmed that this was simply an oversight and that the definitions from the libc crate should be preferred instead.

aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust