From 7e77bf8df1165b26315c5c6e1902d7d2b1ea0675 Mon Sep 17 00:00:00 2001
From: Robbert Krebbers <mail@robbertkrebbers.nl>
Date: Fri, 15 Mar 2019 14:10:13 +0100
Subject: [PATCH] Revert "Make `mapset_elem_of` Opaque." This turned out not to
 work.

This reverts commit 267cc7086dd684d4e536f8898ccdefe34dd7c80e.
---
 theories/mapset.v | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/theories/mapset.v b/theories/mapset.v
index 20529a20..7481faad 100644
--- a/theories/mapset.v
+++ b/theories/mapset.v
@@ -130,8 +130,4 @@ Proof.
 Qed.
 End mapset.
 
-(** [mapset_elem_of] internally contains an equality; make sure that tactics do
-not unfold it and try to unify [∈] against goals with [=]. *)
-Opaque mapset_elem_of.
-
 Arguments mapset_eq_dec : simpl never.
-- 
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