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, 25 deletions

diff --git a/third_party/immer/example/box/box.cpp b/third_party/immer/example/box/box.cpp
deleted file mode 100644
index 8f045e8876ec..000000000000
--- a/third_party/immer/example/box/box.cpp
+++ /dev/null
@@ -1,25 +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
-//
-
-#include <immer/box.hpp>
-
-#include <cassert>
-#include <string>
-
-int main()
-{
-    {
-        // include:update/start
-        auto v1 = immer::box<std::string>{"hello"};
-        auto v2 = v1.update([&](auto l) { return l + ", world!"; });
-
-        assert((v1 == immer::box<std::string>{"hello"}));
-        assert((v2 == immer::box<std::string>{"hello, world!"}));
-        // include:update/end
-    }
-}