[compat] Remove "Refolding Reduction" option.

Following up on #6791, we remove support refolding in reduction.

We also update a test case that was not properly understood, see the
discussion in #6895.

3 files changed, 2 insertions, 10 deletions

diff --git a/test-suite/bugs/closed/3424.v b/test-suite/bugs/opened/3424.v
index ee8cabf171..d1c5bb68f9 100644
--- a/test-suite/bugs/closed/3424.v
+++ b/test-suite/bugs/opened/3424.v
@@ -13,12 +13,12 @@ Notation "0" := (trunc_S minus_one) : trunc_scope.
 Class IsTrunc (n : trunc_index) (A : Type) : Type := Trunc_is_trunc : IsTrunc_internal n A.
 Notation IsHProp := (IsTrunc minus_one).
 Notation IsHSet := (IsTrunc 0).
-Set Refolding Reduction.
 Goal forall (A : Type) (a b : A) (H' : IsHSet A), { x : Type & IsHProp x }.
 Proof.
 intros.
 eexists.
 (* exact (H' a b). *)
 (* Undo. *)
-apply (H' a b).
+Fail apply (H' a b).
+exact (H' a b).
 Qed.
diff --git a/test-suite/output/inference.out b/test-suite/output/inference.out
index d28ee42761..2dbe215bfd 100644
--- a/test-suite/output/inference.out
+++ b/test-suite/output/inference.out
@@ -4,8 +4,6 @@ fun e : option L => match e with
                     | None => None
                     end
      : option L -> option L
-fun (m n p : nat) (H : S m <= S n + p) => le_S_n m (n + p) H
-     : forall m n p : nat, S m <= S n + p -> m <= n + p
 fun n : nat => let y : T n := A n in ?t ?x : T n
      : forall n : nat, T n
 where
diff --git a/test-suite/output/inference.v b/test-suite/output/inference.v
index 73169dae65..57a4739e9f 100644
--- a/test-suite/output/inference.v
+++ b/test-suite/output/inference.v
@@ -13,12 +13,6 @@ Definition P (e:option L) :=
 
 Print P.
 
-(* Check that plus is folded even if reduction is involved *)
-Set Warnings Append "-deprecated-option".
-Set Refolding Reduction.
-Check (fun m n p (H : S m <= (S n) + p) => le_S_n _ _ H).
-
-
 (* Check that the heuristic to solve constraints is not artificially
    dependent on the presence of a let-in, and in particular that the
    second [_] below is not inferred to be n, as if obtained by