Apply nits

compiler/rustc_middle/src/ty/mod.rs

@@ -629,7 +629,6 @@ impl<'tcx> Term<'tcx> {
         }
     }
 
-    /// This function returns the inner `AliasTy` for a `ty::Alias` or `ConstKind::Unevaluated`.
     pub fn to_alias_term(self) -> Option<AliasTerm<'tcx>> {
         match self.unpack() {
             TermKind::Ty(ty) => match *ty.kind() {