parser: Remove Deref impl from Parser

src/libsyntax/parse/parser.rs

@@ -58,7 +58,6 @@ use log::debug;
 use std::borrow::Cow;
 use std::cmp;
 use std::mem;
-use std::ops::Deref;
 use std::path::{self, Path, PathBuf};
 use std::slice;
 
@@ -251,15 +250,6 @@ impl<'a> Drop for Parser<'a> {
     }
 }
 
-// FIXME: Parser uses `self.span` all the time.
-// Remove this impl if you think that using `self.token.span` instead is acceptable.
-impl Deref for Parser<'_> {
-    type Target = Token;
-    fn deref(&self) -> &Self::Target {
-        &self.token
-    }
-}
-
 #[derive(Clone)]
 crate struct TokenCursor {
     crate frame: TokenCursorFrame,