fix tests

Author: Akida31

Diff for: src/test/ui/mismatched_types/closure-arg-type-mismatch.stderr

@@ -15,10 +15,6 @@ note: required by a bound in `map`
    |
 LL |         F: FnMut(Self::Item) -> B,
    |            ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Iterator::map`
-help: consider borrowing the argument
-   |
-LL |     a.iter().map(|_: &(u32, u32)| 45);
-   |                      ~~~~~~~~~~~
 
 error[E0631]: type mismatch in closure arguments
   --> $DIR/closure-arg-type-mismatch.rs:4:14

Diff for: src/test/ui/mismatched_types/issue-36053-2.stderr

@@ -15,10 +15,6 @@ note: required by a bound in `filter`
    |
 LL |         P: FnMut(&Self::Item) -> bool,
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Iterator::filter`
-help: consider borrowing the argument
-   |
-LL |     once::<&str>("str").fuse().filter(|a: &&str| true).count();
-   |                                           ~~~~~
 
 error[E0599]: the method `count` exists for struct `Filter<Fuse<std::iter::Once<&str>>, [closure@$DIR/issue-36053-2.rs:7:39: 7:48]>`, but its trait bounds were not satisfied
   --> $DIR/issue-36053-2.rs:7:55