Gather together usefulness tests

I took most tests that were testing only for match exhaustiveness,
pattern refutability or match arm reachability, and put them in
the same test folder.

1 files changed, 0 insertions, 22 deletions

diff --git a/src/test/ui/refutable-pattern-errors.stderr b/src/test/ui/refutable-pattern-errors.stderr
deleted file mode 100644
index 0cf5d9cd5f1..00000000000
--- a/src/test/ui/refutable-pattern-errors.stderr
+++ /dev/null
@@ -1,22 +0,0 @@
-error[E0005]: refutable pattern in function argument: `(_, _)` not covered
-  --> $DIR/refutable-pattern-errors.rs:3:9
-   |
-LL | fn func((1, (Some(1), 2..=3)): (isize, (Option<isize>, isize))) { }
-   |         ^^^^^^^^^^^^^^^^^^^^^ pattern `(_, _)` not covered
-
-error[E0005]: refutable pattern in local binding: `(std::i32::MIN..=0i32, _)` and `(2i32..=std::i32::MAX, _)` not covered
-  --> $DIR/refutable-pattern-errors.rs:7:9
-   |
-LL |     let (1, (Some(1), 2..=3)) = (1, (None, 2));
-   |         ^^^^^^^^^^^^^^^^^^^^^ patterns `(std::i32::MIN..=0i32, _)` and `(2i32..=std::i32::MAX, _)` not covered
-   |
-   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
-   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
-help: you might want to use `if let` to ignore the variant that isn't matched
-   |
-LL |     if let (1, (Some(1), 2..=3)) = (1, (None, 2)) { /* */ }
-   |
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0005`.