From 3beccfb429863024166433e6585c4e97b6b7c762 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Ho=C5=99e=C5=88ovsk=C3=BD?=
 <martin.horenovsky@gmail.com>
Date: Fri, 20 Sep 2019 23:28:19 +0200
Subject: [PATCH] Remove the no longer used is_unique type trait

It was used in checking that types in TEMPLATE_TEST_CASE and friends
were unique, but this was removed for v2.8.0 (#1628). Since there
are no further uses of this trait, the simplest thing to do is to
just remove it.

Fixes #1757
---
 include/internal/catch_test_registry.h |  1 -
 include/internal/catch_type_traits.hpp | 40 --------------------------
 projects/CMakeLists.txt                |  1 -
 3 files changed, 42 deletions(-)
 delete mode 100644 include/internal/catch_type_traits.hpp

diff --git a/include/internal/catch_test_registry.h b/include/internal/catch_test_registry.h
index 97fe8d68..616c4a25 100644
--- a/include/internal/catch_test_registry.h
+++ b/include/internal/catch_test_registry.h
@@ -12,7 +12,6 @@
 #include "catch_interfaces_testcase.h"
 #include "catch_compiler_capabilities.h"
 #include "catch_stringref.h"
-#include "catch_type_traits.hpp"
 #include "catch_preprocessor.hpp"
 #include "catch_meta.hpp"
 
diff --git a/include/internal/catch_type_traits.hpp b/include/internal/catch_type_traits.hpp
deleted file mode 100644
index 8edb1ecf..00000000
--- a/include/internal/catch_type_traits.hpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *  Created by Jozef on 12/11/2018.
- *  Copyright 2017 Two Blue Cubes Ltd. All rights reserved.
- *
- *  Distributed under the Boost Software License, Version 1.0. (See accompanying
- *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- */
-
-#ifndef TWOBLUECUBES_CATCH_TYPE_TRAITS_HPP_INCLUDED
-#define TWOBLUECUBES_CATCH_TYPE_TRAITS_HPP_INCLUDED
-
-#include <type_traits>
-
-namespace Catch{
-
-#ifdef CATCH_CPP17_OR_GREATER
-	template <typename...>
-	inline constexpr auto is_unique = std::true_type{};
-
-	template <typename T, typename... Rest>
-	inline constexpr auto is_unique<T, Rest...> = std::bool_constant<
-		(!std::is_same_v<T, Rest> && ...) && is_unique<Rest...>
-	>{};
-#else
-
-template <typename...>
-struct is_unique : std::true_type{};
-
-template <typename T0, typename T1, typename... Rest>
-struct is_unique<T0, T1, Rest...> : std::integral_constant
-<bool,
-     !std::is_same<T0, T1>::value 
-     && is_unique<T0, Rest...>::value 
-     && is_unique<T1, Rest...>::value
->{};
-
-#endif
-}
-
-#endif // TWOBLUECUBES_CATCH_TYPE_TRAITS_HPP_INCLUDED
diff --git a/projects/CMakeLists.txt b/projects/CMakeLists.txt
index 0776ceeb..7105632b 100644
--- a/projects/CMakeLists.txt
+++ b/projects/CMakeLists.txt
@@ -192,7 +192,6 @@ set(INTERNAL_HEADERS
         ${HEADER_DIR}/internal/catch_to_string.hpp
         ${HEADER_DIR}/internal/catch_tostring.h
         ${HEADER_DIR}/internal/catch_totals.h
-        ${HEADER_DIR}/internal/catch_type_traits.hpp
         ${HEADER_DIR}/internal/catch_uncaught_exceptions.h
         ${HEADER_DIR}/internal/catch_user_interfaces.h
         ${HEADER_DIR}/internal/catch_version.h