Don't disable multithreading in libtest

patches/0017-Fix-libtest-compilation.patch

@@ -1,24 +0,0 @@
-From e06143d3373293d0490df482261cd4a842f1a5c5 Mon Sep 17 00:00:00 2001
-From: bjorn3 <bjorn3@users.noreply.github.com>
-Date: Thu, 3 Oct 2019 16:51:34 +0200
-Subject: [PATCH] Fix libtest compilation
-
----
- src/libtest/lib.rs | 28 ++++++++--------------------
- 1 file changed, 8 insertions(+), 20 deletions(-)
-
-diff --git a/src/libtest/lib.rs b/src/libtest/lib.rs
-index 8b76080..9e65de2 100644
---- a/src/libtest/lib.rs
-+++ b/src/libtest/lib.rs
-@@ -1509,7 +1509,7 @@ pub fn run_test(
-         // If the platform is single-threaded we're just going to run
-         // the test synchronously, regardless of the concurrency
-         // level.
--        let supports_threads = !cfg!(target_os = "emscripten") && !cfg!(target_arch = "wasm32");
-+        let supports_threads = false;
-         if concurrency == Concurrent::Yes && supports_threads {
-             let cfg = thread::Builder::new().name(name.as_slice().to_owned());
-             cfg.spawn(runtest).unwrap();
--- 
-2.20.1