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, 16 deletions

diff --git a/src/test/rustdoc/impl-box.rs b/src/test/rustdoc/impl-box.rs
deleted file mode 100644
index 592b6c98587..00000000000
--- a/src/test/rustdoc/impl-box.rs
+++ /dev/null
@@ -1,16 +0,0 @@
-// https://github.com/rust-lang/rust/issues/92940
-//
-// Show traits implemented on fundamental types that wrap local ones.
-
-pub struct MyType;
-
-// @has 'impl_box/struct.MyType.html'
-// @has '-' '//*[@id="impl-Iterator-for-Box%3CMyType%3E"]' 'impl Iterator for Box<MyType>'
-
-impl Iterator for Box<MyType> {
-    type Item = ();
-
-    fn next(&mut self) -> Option<Self::Item> {
-        todo!()
-    }
-}