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, 35 deletions

diff --git a/src/test/ui/enum/enum-size-variance.rs b/src/test/ui/enum/enum-size-variance.rs
deleted file mode 100644
index 082bd0dcfb2..00000000000
--- a/src/test/ui/enum/enum-size-variance.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-// run-pass
-
-#![warn(variant_size_differences)]
-#![allow(dead_code)]
-
-// Note that the following test works because all fields of the enum variants are of the same size.
-// If this test is modified and the reordering logic in librustc/ty/layout.rs kicks in, it fails.
-
-enum Enum1 { }
-
-enum Enum2 { A, B, C }
-
-enum Enum3 { D(i64), E, F }
-
-enum Enum4 { H(i64), I(i64), J }
-
-enum Enum5 {
-    L(i64, i64, i64, i64), //~ WARNING three times larger
-    M(i64),
-    N
-}
-
-enum Enum6<T, U> {
-    O(T),
-    P(U),
-    Q(i64)
-}
-
-#[allow(variant_size_differences)]
-enum Enum7 {
-    R(i64, i64, i64, i64),
-    S(i64),
-    T
-}
-pub fn main() { }