Auto merge of #106458 - albertlarsan68:move-tests, r=jyn514

Move src/test to the root

See MCP at rust-lang/compiler-team#573

There may be more changes needed.

The first commit is just the move of the files:
You can check that the first commit did not do anything else than renames by running
```
git diff --diff-filter=r -M100% <rust-lang remote>/master <first commit hash>
```
The output should be empty, because the filter excludes renames, and the match threshold for qualifying a rename is 100%.

The second one is mostly a "find and replace" of `src/test` to `tests` and whatever is needed to make CI pass.

What is left to do:
---

- [x] Move directory
- [ ] Change references to `src/test`
    - [x] Change references in-tree
    - [ ] Change references in submodules / out-of-tree docs
- [x] Make CI pass:
    - [x] Fix tidy
    - [x] Fix tests
    - [x] Bless tests if needed (shouldn't normally)
- [ ] Merge it !

1 files changed, 0 insertions, 20 deletions

diff --git a/src/test/ui/async-await/in-trait/async-example-desugared.rs b/src/test/ui/async-await/in-trait/async-example-desugared.rs
deleted file mode 100644
index fb92ec78674..00000000000
--- a/src/test/ui/async-await/in-trait/async-example-desugared.rs
+++ /dev/null
@@ -1,20 +0,0 @@
-// check-pass
-// edition: 2021
-
-#![feature(async_fn_in_trait)]
-#![feature(return_position_impl_trait_in_trait)]
-#![allow(incomplete_features)]
-
-use std::future::Future;
-
-trait MyTrait {
-    async fn foo(&self) -> i32;
-}
-
-impl MyTrait for i32 {
-    fn foo(&self) -> impl Future<Output = i32> + '_ {
-        async { *self }
-    }
-}
-
-fn main() {}