Revert the tests that shouldn't change. Will squash.

Author: Daniel-B-Smith

tests/ui/suggestions/slice-issue-87994.stderr

@@ -17,10 +17,11 @@ error[E0277]: `[i32]` is not an iterator
   --> $DIR/slice-issue-87994.rs:3:12
    |
 LL |   for _ in v[1..] {
-   |            ^^^^^^ the trait `Sized` is not implemented for `[i32]`
+   |            ^^^^^^ the trait `IntoIterator` is not implemented for `[i32]`
    |
    = note: the trait bound `[i32]: IntoIterator` is not satisfied
    = note: required for `[i32]` to implement `IntoIterator`
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 help: consider borrowing here
    |
 LL |   for _ in &v[1..] {
@@ -47,10 +48,11 @@ error[E0277]: `[K]` is not an iterator
   --> $DIR/slice-issue-87994.rs:11:13
    |
 LL |   for i2 in v2[1..] {
-   |             ^^^^^^^ the trait `Sized` is not implemented for `[K]`
+   |             ^^^^^^^ the trait `IntoIterator` is not implemented for `[K]`
    |
    = note: the trait bound `[K]: IntoIterator` is not satisfied
    = note: required for `[K]` to implement `IntoIterator`
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 help: consider borrowing here
    |
 LL |   for i2 in &v2[1..] {

tests/ui/traits/dyn-iterator-deref-in-for-loop.current.stderr

@@ -2,7 +2,7 @@ error[E0277]: `dyn Iterator<Item = &'a mut u8>` is not an iterator
   --> $DIR/dyn-iterator-deref-in-for-loop.rs:9:17
    |
 LL |     for item in *things {
-   |                 ^^^^^^^ the trait `Sized` is not implemented for `dyn Iterator<Item = &'a mut u8>`
+   |                 ^^^^^^^ the trait `IntoIterator` is not implemented for `dyn Iterator<Item = &'a mut u8>`
    |
    = note: the trait bound `dyn Iterator<Item = &'a mut u8>: IntoIterator` is not satisfied
    = note: required for `dyn Iterator<Item = &'a mut u8>` to implement `IntoIterator`

tests/ui/traits/dyn-iterator-deref-in-for-loop.next.stderr

@@ -2,7 +2,7 @@ error[E0277]: `dyn Iterator<Item = &'a mut u8>` is not an iterator
   --> $DIR/dyn-iterator-deref-in-for-loop.rs:9:17
    |
 LL |     for item in *things {
-   |                 ^^^^^^^ the trait `Sized` is not implemented for `dyn Iterator<Item = &'a mut u8>`
+   |                 ^^^^^^^ the trait `IntoIterator` is not implemented for `dyn Iterator<Item = &'a mut u8>`
    |
    = note: the trait bound `dyn Iterator<Item = &'a mut u8>: IntoIterator` is not satisfied
    = note: required for `dyn Iterator<Item = &'a mut u8>` to implement `IntoIterator`