Rollup merge of #127878 - estebank:assoc-item-removal, r=fmease

Fix associated item removal suggestion

We were previously telling people to write what was already there, instead of removal (treating it as a `help`). We now properly suggest to remove the code that needs to be removed.

```
error[E0229]: associated item constraints are not allowed here
  --> $DIR/E0229.rs:13:25
   |
LL | fn baz<I>(x: &<I as Foo<A = Bar>>::A) {}
   |                         ^^^^^^^ associated item constraint not allowed here
   |
help: consider removing this associated item binding
   |
LL - fn baz<I>(x: &<I as Foo<A = Bar>>::A) {}
LL + fn baz<I>(x: &<I as Foo>::A) {}
   |
```

0 files changed, 0 insertions, 0 deletions