Move where doc comment meant as comment check

The new place makes more sense and covers more cases beyond individual
statements.

```
error: expected one of `.`, `;`, `?`, `else`, or an operator, found doc comment `//!foo
  --> $DIR/doc-comment-in-stmt.rs:25:22
   |
LL |     let y = x.max(1) //!foo
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected one of `.`, `;`, `?`, `else`, or an operator
   |
help: add a space before `!` to write a regular comment
   |
LL |     let y = x.max(1) // !foo
   |                        +
```

Fix #65329.

1 files changed, 0 insertions, 17 deletions

diff --git a/compiler/rustc_parse/src/parser/stmt.rs b/compiler/rustc_parse/src/parser/stmt.rs
index e2f59cb2071..8e3c4568694 100644
--- a/compiler/rustc_parse/src/parser/stmt.rs
+++ b/compiler/rustc_parse/src/parser/stmt.rs
@@ -632,23 +632,6 @@ impl<'a> Parser<'a> {
                         // Recover from parser, skip type error to avoid extra errors.
                         Ok(true) => true,
                         Err(mut e) => {
-                            if let TokenKind::DocComment(..) = self.token.kind
-                                && let Ok(snippet) = self.span_to_snippet(self.token.span)
-                            {
-                                let sp = self.token.span;
-                                let marker = &snippet[..3];
-                                let (comment_marker, doc_comment_marker) = marker.split_at(2);
-
-                                e.span_suggestion(
-                                    sp.with_hi(sp.lo() + BytePos(marker.len() as u32)),
-                                    format!(
-                                        "add a space before `{doc_comment_marker}` to use a regular comment",
-                                    ),
-                                    format!("{comment_marker} {doc_comment_marker}"),
-                                    Applicability::MaybeIncorrect,
-                                );
-                            }
-
                             if self.recover_colon_as_semi() {
                                 // recover_colon_as_semi has already emitted a nicer error.
                                 e.delay_as_bug();