chore(3p/immer): Remove vendored copy of immer r/2029

We ended up dropping the use of this library again.

Change-Id: I2c44cd22a6128d23f87a582402bf5fb84991d608
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2292
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

1 files changed, 0 insertions, 58 deletions

diff --git a/third_party/immer/test/box/generic.ipp b/third_party/immer/test/box/generic.ipp
deleted file mode 100644
index cfb5f04ea1b9..000000000000
--- a/third_party/immer/test/box/generic.ipp
+++ /dev/null
@@ -1,58 +0,0 @@
-//
-// immer: immutable data structures for C++
-// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
-//
-// This software is distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
-//
-
-#ifndef BOX_T
-#error "define the box template to use in BOX_T"
-#endif
-
-#include <catch.hpp>
-
-TEST_CASE("construction and copy")
-{
-    auto x = BOX_T<int>{};
-    CHECK(x == 0);
-
-    auto y = x;
-    CHECK(&x.get() == &y.get());
-
-    auto z = std::move(x);
-    CHECK(&z.get() == &y.get());
-}
-
-TEST_CASE("equality")
-{
-    auto x = BOX_T<int>{};
-    auto y = x;
-    CHECK(x == 0.0f);
-    CHECK(x == y);
-    CHECK(x == BOX_T<int>{});
-    CHECK(x != BOX_T<int>{42});
-}
-
-TEST_CASE("update")
-{
-    auto x = BOX_T<int>{};
-    auto y = x.update([](auto v) { return v + 1; });
-    CHECK(x == 0);
-    CHECK(y == 1);
-}
-
-TEST_CASE("update move")
-{
-    auto x    = BOX_T<int>{};
-    auto addr = &x.get();
-    auto y    = std::move(x).update(
-        [](auto&& v) { return std::forward<decltype(v)>(v) + 1; });
-
-    CHECK(y == 1);
-    if (std::is_empty<typename BOX_T<int>::memory_policy::refcount>::value) {
-        CHECK(&y.get() != addr);
-    } else {
-        CHECK(&y.get() == addr);
-    }
-}