Auto merge of #95758 - compiler-errors:issue-54771, r=estebank

Only suggest removing semicolon when expression is compatible with `impl Trait`

https://github.com/rust-lang/rust/issues/54771#issuecomment-476423690
> It still needs checking that the last statement's expr can actually conform to the trait, but the naïve behavior is there.

Only suggest removing a semicolon when the type behind the semicolon actually implements the trait in an RPIT `-> impl Trait`. Also upgrade the label that suggests removing the semicolon to a suggestion (should it be verbose?).

cc #54771

compiler/rustc_typeck/src/check/fn_ctxt/checks.rs

@@ -936,7 +936,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             } else {
                 err.span_suggestion_short(
                     span_semi,
-                    "consider removing this semicolon",
+                    "remove this semicolon",
                     String::new(),
                     Applicability::MachineApplicable,
                 );